/* ldif.c - the ldif backend */ /* $OpenLDAP$ */ /* This work is part of OpenLDAP Software . * * Copyright 2005-2011 The OpenLDAP Foundation. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted only as authorized by the OpenLDAP * Public License. * * A copy of this license is available in the file LICENSE in the * top-level directory of the distribution or, alternatively, at * . */ /* ACKNOWLEDGEMENTS: * This work was originally developed by Eric Stokes for inclusion * in OpenLDAP Software. */ #include "portable.h" #include #include #include #include #include #include #include #include #include "slap.h" #include "lutil.h" #include "config.h" struct ldif_tool { Entry **entries; /* collected by bi_tool_entry_first() */ ID elen; /* length of entries[] array */ ID ecount; /* number of entries */ ID ecurrent; /* bi_tool_entry_next() position */ # define ENTRY_BUFF_INCREMENT 500 /* initial entries[] length */ struct berval *tl_base; int tl_scope; Filter *tl_filter; }; /* Per-database data */ struct ldif_info { struct berval li_base_path; /* database directory */ struct ldif_tool li_tool; /* for slap tools */ /* * Read-only LDAP requests readlock li_rdwr for filesystem input. * Update requests first lock li_modop_mutex for filesystem I/O, * and then writelock li_rdwr as well for filesystem output. * This allows update requests to do callbacks that acquire * read locks, e.g. access controls that inspect entries. * (An alternative would be recursive read/write locks.) */ ldap_pvt_thread_mutex_t li_modop_mutex; /* serialize update requests */ ldap_pvt_thread_rdwr_t li_rdwr; /* no other I/O when writing */ }; static int write_data( int fd, const char *spew, int len, int *save_errno ); #ifdef _WIN32 #define mkdir(a,b) mkdir(a) #define move_file(from, to) (!MoveFileEx(from, to, MOVEFILE_REPLACE_EXISTING)) #else #define move_file(from, to) rename(from, to) #endif #define move_dir(from, to) rename(from, to) #define LDIF ".ldif" #define LDIF_FILETYPE_SEP '.' /* LDIF[0] */ /* * Unsafe/translated characters in the filesystem. * * LDIF_UNSAFE_CHAR(c) returns true if the character c is not to be used * in relative filenames, except it should accept '\\', '{' and '}' even * if unsafe. The value should be a constant expression. * * If '\\' is unsafe, #define LDIF_ESCAPE_CHAR as a safe character. * If '{' and '}' are unsafe, #define IX_FSL/IX_FSR as safe characters. * (Not digits, '-' or '+'. IX_FSL == IX_FSR is allowed.) * * Characters are escaped as LDIF_ESCAPE_CHAR followed by two hex digits, * except '\\' is replaced with LDIF_ESCAPE_CHAR and {} with IX_FS[LR]. * Also some LDIF special chars are hex-escaped. * * Thus an LDIF filename is a valid normalized RDN (or suffix DN) * followed by ".ldif", except with '\\' replaced with LDIF_ESCAPE_CHAR. */ #ifndef _WIN32 /* * Unix/MacOSX version. ':' vs '/' can cause confusion on MacOSX so we * escape both. We escape them on Unix so both OS variants get the same * filenames. */ #define LDIF_ESCAPE_CHAR '\\' #define LDIF_UNSAFE_CHAR(c) ((c) == '/' || (c) == ':') #else /* _WIN32 */ /* Windows version - Microsoft's list of unsafe characters, except '\\' */ #define LDIF_ESCAPE_CHAR '^' /* Not '\\' (unsafe on Windows) */ #define LDIF_UNSAFE_CHAR(c) \ ((c) == '/' || (c) == ':' || \ (c) == '<' || (c) == '>' || (c) == '"' || \ (c) == '|' || (c) == '?' || (c) == '*') #endif /* !_WIN32 */ /* * Left and Right "{num}" prefix to ordered RDNs ("olcDatabase={1}bdb"). * IX_DN* are for LDAP RDNs, IX_FS* for their .ldif filenames. */ #define IX_DNL '{' #define IX_DNR '}' #ifndef IX_FSL #define IX_FSL IX_DNL #define IX_FSR IX_DNR #endif /* * Test for unsafe chars, as well as chars handled specially by back-ldif: * - If the escape char is not '\\', it must itself be escaped. Otherwise * '\\' and the escape char would map to the same character. * - Escape the '.' in ".ldif", so the directory for an RDN that actually * ends with ".ldif" can not conflict with a file of the same name. And * since some OSes/programs choke on multiple '.'s, escape all of them. * - If '{' and '}' are translated to some other characters, those * characters must in turn be escaped when they occur in an RDN. */ #ifndef LDIF_NEED_ESCAPE #define LDIF_NEED_ESCAPE(c) \ ((LDIF_UNSAFE_CHAR(c)) || \ LDIF_MAYBE_UNSAFE(c, LDIF_ESCAPE_CHAR) || \ LDIF_MAYBE_UNSAFE(c, LDIF_FILETYPE_SEP) || \ LDIF_MAYBE_UNSAFE(c, IX_FSL) || \ (IX_FSR != IX_FSL && LDIF_MAYBE_UNSAFE(c, IX_FSR))) #endif /* * Helper macro for LDIF_NEED_ESCAPE(): Treat character x as unsafe if * back-ldif does not already treat is specially. */ #define LDIF_MAYBE_UNSAFE(c, x) \ (!(LDIF_UNSAFE_CHAR(x) || (x) == '\\' || (x) == IX_DNL || (x) == IX_DNR) \ && (c) == (x)) /* Collect other "safe char" tests here, until someone needs a fix. */ enum { eq_unsafe = LDIF_UNSAFE_CHAR('='), safe_filenames = STRLENOF("" LDAP_DIRSEP "") == 1 && !( LDIF_UNSAFE_CHAR('-') || /* for "{-1}frontend" in bconfig.c */ LDIF_UNSAFE_CHAR(LDIF_ESCAPE_CHAR) || LDIF_UNSAFE_CHAR(IX_FSL) || LDIF_UNSAFE_CHAR(IX_FSR)) }; /* Sanity check: Try to force a compilation error if !safe_filenames */ typedef struct { int assert_safe_filenames : safe_filenames ? 2 : -2; } assert_safe_filenames[safe_filenames ? 2 : -2]; static ConfigTable ldifcfg[] = { { "directory", "dir", 2, 2, 0, ARG_BERVAL|ARG_OFFSET, (void *)offsetof(struct ldif_info, li_base_path), "( OLcfgDbAt:0.1 NAME 'olcDbDirectory' " "DESC 'Directory for database content' " "EQUALITY caseIgnoreMatch " "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL }, { NULL, NULL, 0, 0, 0, ARG_IGNORED, NULL, NULL, NULL, NULL } }; static ConfigOCs ldifocs[] = { { "( OLcfgDbOc:2.1 " "NAME 'olcLdifConfig' " "DESC 'LDIF backend configuration' " "SUP olcDatabaseConfig " "MUST ( olcDbDirectory ) )", Cft_Database, ldifcfg }, { NULL, 0, NULL } }; /* * Handle file/directory names. */ /* Set *res = LDIF filename path for the normalized DN */ static int ndn2path( Operation *op, struct berval *dn, struct berval *res, int empty_ok ) { BackendDB *be = op->o_bd; struct ldif_info *li = (struct ldif_info *) be->be_private; struct berval *suffixdn = &be->be_nsuffix[0]; const char *start, *end, *next, *p; char ch, *ptr; ber_len_t len; static const char hex[] = "0123456789ABCDEF"; assert( dn != NULL ); assert( !BER_BVISNULL( dn ) ); assert( suffixdn != NULL ); assert( !BER_BVISNULL( suffixdn ) ); assert( dnIsSuffix( dn, suffixdn ) ); if ( dn->bv_len == 0 && !empty_ok ) { return LDAP_UNWILLING_TO_PERFORM; } start = dn->bv_val; end = start + dn->bv_len; /* Room for dir, dirsep, dn, LDIF, "\hexpair"-escaping of unsafe chars */ len = li->li_base_path.bv_len + dn->bv_len + (1 + STRLENOF( LDIF )); for ( p = start; p < end; ) { ch = *p++; if ( LDIF_NEED_ESCAPE( ch ) ) len += 2; } res->bv_val = ch_malloc( len + 1 ); ptr = lutil_strcopy( res->bv_val, li->li_base_path.bv_val ); for ( next = end - suffixdn->bv_len; end > start; end = next ) { /* Set p = start of DN component, next = &',' or start of DN */ while ( (p = next) > start ) { --next; if ( DN_SEPARATOR( *next ) ) break; } /* Append */ for ( *ptr++ = LDAP_DIRSEP[0]; p < end; *ptr++ = ch ) { ch = *p++; if ( LDIF_ESCAPE_CHAR != '\\' && ch == '\\' ) { ch = LDIF_ESCAPE_CHAR; } else if ( IX_FSL != IX_DNL && ch == IX_DNL ) { ch = IX_FSL; } else if ( IX_FSR != IX_DNR && ch == IX_DNR ) { ch = IX_FSR; } else if ( LDIF_NEED_ESCAPE( ch ) ) { *ptr++ = LDIF_ESCAPE_CHAR; *ptr++ = hex[(ch & 0xFFU) >> 4]; ch = hex[ch & 0x0FU]; } } } ptr = lutil_strcopy( ptr, LDIF ); res->bv_len = ptr - res->bv_val; assert( res->bv_len <= len ); return LDAP_SUCCESS; } /* * *dest = dupbv(), plus room for -sized filename. * Return pointer past the dirname. */ static char * fullpath_alloc( struct berval *dest, const struct berval *dir, ber_len_t more ) { char *s = SLAP_MALLOC( dir->bv_len + more + 2 ); dest->bv_val = s; if ( s == NULL ) { dest->bv_len = 0; Debug( LDAP_DEBUG_ANY, "back-ldif: out of memory\n", 0, 0, 0 ); } else { s = lutil_strcopy( dest->bv_val, dir->bv_val ); *s++ = LDAP_DIRSEP[0]; *s = '\0'; dest->bv_len = s - dest->bv_val; } return s; } /* * Append filename to fullpath_alloc() dirname or replace previous filename. * dir_end = fullpath_alloc() return value. */ #define FILL_PATH(fpath, dir_end, filename) \ ((fpath)->bv_len = lutil_strcopy(dir_end, filename) - (fpath)->bv_val) /* .ldif entry filename length <-> subtree dirname length. */ #define ldif2dir_len(bv) ((bv).bv_len -= STRLENOF(LDIF)) #define dir2ldif_len(bv) ((bv).bv_len += STRLENOF(LDIF)) /* .ldif entry filename <-> subtree dirname, both with dirname length. */ #define ldif2dir_name(bv) ((bv).bv_val[(bv).bv_len] = '\0') #define dir2ldif_name(bv) ((bv).bv_val[(bv).bv_len] = LDIF_FILETYPE_SEP) /* Get the parent directory path, plus the LDIF suffix overwritten by a \0. */ static int get_parent_path( struct berval *dnpath, struct berval *res ) { ber_len_t i = dnpath->bv_len; while ( i > 0 && dnpath->bv_val[ --i ] != LDAP_DIRSEP[0] ) ; if ( res == NULL ) { res = dnpath; } else { res->bv_val = SLAP_MALLOC( i + 1 + STRLENOF(LDIF) ); if ( res->bv_val == NULL ) return LDAP_OTHER; AC_MEMCPY( res->bv_val, dnpath->bv_val, i ); } res->bv_len = i; strcpy( res->bv_val + i, LDIF ); res->bv_val[i] = '\0'; return LDAP_SUCCESS; } /* Make temporary filename pattern for mkstemp() based on dnpath. */ static char * ldif_tempname( const struct berval *dnpath ) { static const char suffix[] = ".XXXXXX"; ber_len_t len = dnpath->bv_len - STRLENOF( LDIF ); char *name = SLAP_MALLOC( len + sizeof( suffix ) ); if ( name != NULL ) { AC_MEMCPY( name, dnpath->bv_val, len ); strcpy( name + len, suffix ); } return name; } /* CRC-32 table for the polynomial: * x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1. * * As used by zlib */ static const ber_uint_t crctab[256] = { 0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L, 0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L, 0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L, 0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL, 0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L, 0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L, 0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L, 0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL, 0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L, 0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL, 0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L, 0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L, 0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L, 0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL, 0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL, 0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L, 0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL, 0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L, 0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L, 0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L, 0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL, 0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L, 0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L, 0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL, 0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L, 0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L, 0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L, 0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L, 0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L, 0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL, 0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL, 0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L, 0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L, 0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL, 0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL, 0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L, 0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL, 0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L, 0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL, 0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L, 0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL, 0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L, 0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L, 0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL, 0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L, 0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L, 0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L, 0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L, 0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L, 0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L, 0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL, 0x2d02ef8dL }; #define CRC1 crc = crctab[(crc ^ *buf++) & 0xff] ^ (crc >> 8) #define CRC8 CRC1; CRC1; CRC1; CRC1; CRC1; CRC1; CRC1; CRC1 unsigned int crc32(const void *vbuf, int len) { const unsigned char *buf = vbuf; ber_uint_t crc = 0xffffffff; int i; while (len > 7) { CRC8; len -= 8; } while (len) { CRC1; len--; } return crc ^ 0xffffffff; } /* * Read a file, or stat() it if datap == NULL. Allocate and fill *datap. * Return LDAP_SUCCESS, LDAP_NO_SUCH_OBJECT (no such file), or another error. */ static int ldif_read_file( const char *path, char **datap ) { int rc = LDAP_SUCCESS, fd, len; int res = -1; /* 0:success, <0:error, >0:file too big/growing. */ struct stat st; char *data = NULL, *ptr = NULL; const char *msg; if ( datap == NULL ) { res = stat( path, &st ); goto done; } fd = open( path, O_RDONLY ); if ( fd >= 0 ) { if ( fstat( fd, &st ) == 0 ) { if ( st.st_size > INT_MAX - 2 ) { res = 1; } else { len = st.st_size + 1; /* +1 detects file size > st.st_size */ *datap = data = ptr = SLAP_MALLOC( len + 1 ); if ( ptr != NULL ) { while ( len && (res = read( fd, ptr, len )) ) { if ( res > 0 ) { len -= res; ptr += res; } else if ( errno != EINTR ) { break; } } *ptr = '\0'; } } } if ( close( fd ) < 0 ) res = -1; } done: if ( res == 0 ) { #ifdef LDAP_DEBUG msg = "entry file exists"; if ( datap ) { msg = "read entry file"; len = ptr - data; ptr = strstr( data, "\n# CRC32" ); if (!ptr) { msg = "read entry file without checksum"; } else { unsigned int crc1 = 0, crc2 = 1; if ( sscanf( ptr + 9, "%08x", &crc1) == 1) { ptr = strchr(ptr+1, '\n'); if ( ptr ) { ptr++; len -= (ptr - data); crc2 = crc32( ptr, len ); } } if ( crc1 != crc2 ) { Debug( LDAP_DEBUG_ANY, "ldif_read_file: checksum error on \"%s\"\n", path, 0, 0 ); return rc; } } } Debug( LDAP_DEBUG_TRACE, "ldif_read_file: %s: \"%s\"\n", msg, path, 0 ); #endif /* LDAP_DEBUG */ } else { if ( res < 0 && errno == ENOENT ) { Debug( LDAP_DEBUG_TRACE, "ldif_read_file: " "no entry file \"%s\"\n", path, 0, 0 ); rc = LDAP_NO_SUCH_OBJECT; } else { msg = res < 0 ? STRERROR( errno ) : "bad stat() size"; Debug( LDAP_DEBUG_ANY, "ldif_read_file: %s for \"%s\"\n", msg, path, 0 ); rc = LDAP_OTHER; } if ( data != NULL ) SLAP_FREE( data ); } return rc; } /* * return nonnegative for success or -1 for error * do not return numbers less than -1 */ static int spew_file( int fd, const char *spew, int len, int *save_errno ) { int writeres; #define HEADER "# AUTO-GENERATED FILE - DO NOT EDIT!! Use ldapmodify.\n" char header[sizeof(HEADER "# CRC32 12345678\n")]; sprintf(header, HEADER "# CRC32 %08x\n", crc32(spew, len)); writeres = write_data(fd, header, sizeof(header)-1, save_errno); return writeres < 0 ? writeres : write_data(fd, spew, len, save_errno); } static int write_data( int fd, const char *spew, int len, int *save_errno ) { int writeres = 0; while(len > 0) { writeres = write(fd, spew, len); if(writeres == -1) { *save_errno = errno; if (*save_errno != EINTR) break; } else { spew += writeres; len -= writeres; } } return writeres; } /* Write an entry LDIF file. Create parentdir first if non-NULL. */ static int ldif_write_entry( Operation *op, Entry *e, const struct berval *path, const char *parentdir, const char **text ) { int rc = LDAP_OTHER, res, save_errno = 0; int fd, entry_length; char *entry_as_string, *tmpfname; if ( op->o_abandon ) return SLAPD_ABANDON; if ( parentdir != NULL && mkdir( parentdir, 0750 ) < 0 ) { save_errno = errno; Debug( LDAP_DEBUG_ANY, "ldif_write_entry: %s \"%s\": %s\n", "cannot create parent directory", parentdir, STRERROR( save_errno ) ); *text = "internal error (cannot create parent directory)"; return rc; } tmpfname = ldif_tempname( path ); fd = tmpfname == NULL ? -1 : mkstemp( tmpfname ); if ( fd < 0 ) { save_errno = errno; Debug( LDAP_DEBUG_ANY, "ldif_write_entry: %s for \"%s\": %s\n", "cannot create file", e->e_dn, STRERROR( save_errno ) ); *text = "internal error (cannot create file)"; } else { ber_len_t dn_len = e->e_name.bv_len; struct berval rdn; /* Only save the RDN onto disk */ dnRdn( &e->e_name, &rdn ); if ( rdn.bv_len != dn_len ) { e->e_name.bv_val[rdn.bv_len] = '\0'; e->e_name.bv_len = rdn.bv_len; } res = -2; ldap_pvt_thread_mutex_lock( &entry2str_mutex ); entry_as_string = entry2str( e, &entry_length ); if ( entry_as_string != NULL ) res = spew_file( fd, entry_as_string, entry_length, &save_errno ); ldap_pvt_thread_mutex_unlock( &entry2str_mutex ); /* Restore full DN */ if ( rdn.bv_len != dn_len ) { e->e_name.bv_val[rdn.bv_len] = ','; e->e_name.bv_len = dn_len; } if ( close( fd ) < 0 && res >= 0 ) { res = -1; save_errno = errno; } if ( res >= 0 ) { if ( move_file( tmpfname, path->bv_val ) == 0 ) { Debug( LDAP_DEBUG_TRACE, "ldif_write_entry: " "wrote entry \"%s\"\n", e->e_name.bv_val, 0, 0 ); rc = LDAP_SUCCESS; } else { save_errno = errno; Debug( LDAP_DEBUG_ANY, "ldif_write_entry: " "could not put entry file for \"%s\" in place: %s\n", e->e_name.bv_val, STRERROR( save_errno ), 0 ); *text = "internal error (could not put entry file in place)"; } } else if ( res == -1 ) { Debug( LDAP_DEBUG_ANY, "ldif_write_entry: %s \"%s\": %s\n", "write error to", tmpfname, STRERROR( save_errno ) ); *text = "internal error (write error to entry file)"; } if ( rc != LDAP_SUCCESS ) { unlink( tmpfname ); } } if ( tmpfname ) SLAP_FREE( tmpfname ); return rc; } /* * Read the entry at path, or if entryp==NULL just see if it exists. * pdn and pndn are the parent's DN and normalized DN, or both NULL. * Return an LDAP result code. */ static int ldif_read_entry( Operation *op, const char *path, struct berval *pdn, struct berval *pndn, Entry **entryp, const char **text ) { int rc; Entry *entry; char *entry_as_string; struct berval rdn; /* TODO: Does slapd prevent Abandon of Bind as per rfc4511? * If so we need not check for LDAP_REQ_BIND here. */ if ( op->o_abandon && op->o_tag != LDAP_REQ_BIND ) return SLAPD_ABANDON; rc = ldif_read_file( path, entryp ? &entry_as_string : NULL ); switch ( rc ) { case LDAP_SUCCESS: if ( entryp == NULL ) break; *entryp = entry = str2entry( entry_as_string ); SLAP_FREE( entry_as_string ); if ( entry == NULL ) { rc = LDAP_OTHER; if ( text != NULL ) *text = "internal error (cannot parse some entry file)"; break; } if ( pdn == NULL || BER_BVISEMPTY( pdn ) ) break; /* Append parent DN to DN from LDIF file */ rdn = entry->e_name; build_new_dn( &entry->e_name, pdn, &rdn, NULL ); SLAP_FREE( rdn.bv_val ); rdn = entry->e_nname; build_new_dn( &entry->e_nname, pndn, &rdn, NULL ); SLAP_FREE( rdn.bv_val ); break; case LDAP_OTHER: if ( text != NULL ) *text = entryp ? "internal error (cannot read some entry file)" : "internal error (cannot stat some entry file)"; break; } return rc; } /* * Read the operation's entry, or if entryp==NULL just see if it exists. * Return an LDAP result code. May set *text to a message on failure. * If pathp is non-NULL, set it to the entry filename on success. */ static int get_entry( Operation *op, Entry **entryp, struct berval *pathp, const char **text ) { int rc; struct berval path, pdn, pndn; dnParent( &op->o_req_dn, &pdn ); dnParent( &op->o_req_ndn, &pndn ); rc = ndn2path( op, &op->o_req_ndn, &path, 0 ); if ( rc != LDAP_SUCCESS ) { goto done; } rc = ldif_read_entry( op, path.bv_val, &pdn, &pndn, entryp, text ); if ( rc == LDAP_SUCCESS && pathp != NULL ) { *pathp = path; } else { SLAP_FREE( path.bv_val ); } done: return rc; } /* * RDN-named directory entry, with special handling of "attr={num}val" RDNs. * For sorting, filename "attr=val.ldif" is truncated to "attr="val\0ldif", * and filename "attr={num}val.ldif" to "attr={\0um}val.ldif". * Does not sort escaped chars correctly, would need to un-escape them. */ typedef struct bvlist { struct bvlist *next; char *trunc; /* filename was truncated here */ int inum; /* num from "attr={num}" in filename, or INT_MIN */ char savech; /* original char at *trunc */ /* BVL_NAME(&bvlist) is the filename, allocated after the struct: */ # define BVL_NAME(bvl) ((char *) ((bvl) + 1)) # define BVL_SIZE(namelen) (sizeof(bvlist) + (namelen) + 1) } bvlist; static int ldif_send_entry( Operation *op, SlapReply *rs, Entry *e, int scope ) { int rc = LDAP_SUCCESS; if ( scope == LDAP_SCOPE_BASE || scope == LDAP_SCOPE_SUBTREE ) { if ( rs == NULL ) { /* Save the entry for tool mode */ struct ldif_tool *tl = &((struct ldif_info *) op->o_bd->be_private)->li_tool; if ( tl->ecount >= tl->elen ) { /* Allocate/grow entries */ ID elen = tl->elen ? tl->elen * 2 : ENTRY_BUFF_INCREMENT; Entry **entries = (Entry **) SLAP_REALLOC( tl->entries, sizeof(Entry *) * elen ); if ( entries == NULL ) { Debug( LDAP_DEBUG_ANY, "ldif_send_entry: out of memory\n", 0, 0, 0 ); rc = LDAP_OTHER; goto done; } tl->elen = elen; tl->entries = entries; } tl->entries[tl->ecount++] = e; return rc; } else if ( !get_manageDSAit( op ) && is_entry_referral( e ) ) { /* Send a continuation reference. * (ldif_back_referrals() handles baseobject referrals.) * Don't check the filter since it's only a candidate. */ BerVarray refs = get_entry_referrals( op, e ); rs->sr_ref = referral_rewrite( refs, &e->e_name, NULL, scope ); rs->sr_entry = e; rc = send_search_reference( op, rs ); ber_bvarray_free( rs->sr_ref ); ber_bvarray_free( refs ); rs->sr_ref = NULL; rs->sr_entry = NULL; } else if ( test_filter( op, e, op->ors_filter ) == LDAP_COMPARE_TRUE ) { rs->sr_entry = e; rs->sr_attrs = op->ors_attrs; /* Could set REP_ENTRY_MUSTBEFREED too for efficiency, * but refraining lets us test unFREEable MODIFIABLE * entries. Like entries built on the stack. */ rs->sr_flags = REP_ENTRY_MODIFIABLE; rc = send_search_entry( op, rs ); rs->sr_entry = NULL; rs->sr_attrs = NULL; } } done: entry_free( e ); return rc; } /* Read LDIF directory into . Set *fname_maxlenp. */ static int ldif_readdir( Operation *op, SlapReply *rs, const struct berval *path, bvlist **listp, ber_len_t *fname_maxlenp ) { int rc = LDAP_SUCCESS; DIR *dir_of_path; *listp = NULL; *fname_maxlenp = 0; dir_of_path = opendir( path->bv_val ); if ( dir_of_path == NULL ) { int save_errno = errno; struct ldif_info *li = (struct ldif_info *) op->o_bd->be_private; int is_rootDSE = (path->bv_len == li->li_base_path.bv_len); /* Absent directory is OK (leaf entry), except the database dir */ if ( is_rootDSE || save_errno != ENOENT ) { Debug( LDAP_DEBUG_ANY, "=> ldif_search_entry: failed to opendir \"%s\": %s\n", path->bv_val, STRERROR( save_errno ), 0 ); rc = LDAP_OTHER; if ( rs != NULL ) rs->sr_text = save_errno != ENOENT ? "internal error (bad directory)" : !is_rootDSE ? "internal error (missing directory)" : "internal error (database directory does not exist)"; } } else { bvlist *ptr; struct dirent *dir; int save_errno = 0; while ( (dir = readdir( dir_of_path )) != NULL ) { size_t fname_len; bvlist *bvl, **prev; char *trunc, *idxp, *endp, *endp2; fname_len = strlen( dir->d_name ); if ( fname_len < STRLENOF( "x=" LDIF )) /* min filename size */ continue; if ( strcmp( dir->d_name + fname_len - STRLENOF(LDIF), LDIF )) continue; if ( *fname_maxlenp < fname_len ) *fname_maxlenp = fname_len; bvl = SLAP_MALLOC( BVL_SIZE( fname_len ) ); if ( bvl == NULL ) { rc = LDAP_OTHER; save_errno = errno; break; } strcpy( BVL_NAME( bvl ), dir->d_name ); /* Make it sortable by ("attr=val" or ) */ trunc = BVL_NAME( bvl ) + fname_len - STRLENOF( LDIF ); if ( (idxp = strchr( BVL_NAME( bvl ) + 2, IX_FSL )) != NULL && (endp = strchr( ++idxp, IX_FSR )) != NULL && endp > idxp && (eq_unsafe || idxp[-2] == '=' || endp + 1 == trunc) ) { /* attr={n}val or bconfig.c's "pseudo-indexed" attr=val{n} */ bvl->inum = strtol( idxp, &endp2, 10 ); if ( endp2 == endp ) { trunc = idxp; goto truncate; } } bvl->inum = INT_MIN; truncate: bvl->trunc = trunc; bvl->savech = *trunc; *trunc = '\0'; /* Insertion sort */ for ( prev = listp; (ptr = *prev) != NULL; prev = &ptr->next ) { int cmp = strcmp( BVL_NAME( bvl ), BVL_NAME( ptr )); if ( cmp < 0 || (cmp == 0 && bvl->inum < ptr->inum) ) break; } *prev = bvl; bvl->next = ptr; } if ( closedir( dir_of_path ) < 0 ) { save_errno = errno; rc = LDAP_OTHER; if ( rs != NULL ) rs->sr_text = "internal error (bad directory)"; } if ( rc != LDAP_SUCCESS ) { Debug( LDAP_DEBUG_ANY, "ldif_search_entry: %s \"%s\": %s\n", "error reading directory", path->bv_val, STRERROR( save_errno ) ); } } return rc; } /* * Send an entry, recursively search its children, and free or save it. * Return an LDAP result code. Parameters: * op, rs operation and reply. rs == NULL for slap tools. * e entry to search, or NULL for rootDSE. * scope scope for the part of the search from this entry. * path LDIF filename -- bv_len and non-directory part are overwritten. */ static int ldif_search_entry( Operation *op, SlapReply *rs, Entry *e, int scope, struct berval *path ) { int rc = LDAP_SUCCESS; struct berval dn = BER_BVC( "" ), ndn = BER_BVC( "" ); if ( scope != LDAP_SCOPE_BASE && e != NULL ) { /* Copy DN/NDN since we send the entry with REP_ENTRY_MODIFIABLE, * which bconfig.c seems to need. (TODO: see config_rename_one.) */ if ( ber_dupbv( &dn, &e->e_name ) == NULL || ber_dupbv( &ndn, &e->e_nname ) == NULL ) { Debug( LDAP_DEBUG_ANY, "ldif_search_entry: out of memory\n", 0, 0, 0 ); rc = LDAP_OTHER; goto done; } } /* Send the entry if appropriate, and free or save it */ if ( e != NULL ) rc = ldif_send_entry( op, rs, e, scope ); /* Search the children */ if ( scope != LDAP_SCOPE_BASE && rc == LDAP_SUCCESS ) { bvlist *list, *ptr; struct berval fpath; /* becomes child pathname */ char *dir_end; /* will point past dirname in fpath */ ldif2dir_len( *path ); ldif2dir_name( *path ); rc = ldif_readdir( op, rs, path, &list, &fpath.bv_len ); if ( list != NULL ) { const char **text = rs == NULL ? NULL : &rs->sr_text; if ( scope == LDAP_SCOPE_ONELEVEL ) scope = LDAP_SCOPE_BASE; else if ( scope == LDAP_SCOPE_SUBORDINATE ) scope = LDAP_SCOPE_SUBTREE; /* Allocate fpath and fill in directory part */ dir_end = fullpath_alloc( &fpath, path, fpath.bv_len ); if ( dir_end == NULL ) rc = LDAP_OTHER; do { ptr = list; if ( rc == LDAP_SUCCESS ) { *ptr->trunc = ptr->savech; FILL_PATH( &fpath, dir_end, BVL_NAME( ptr )); rc = ldif_read_entry( op, fpath.bv_val, &dn, &ndn, &e, text ); switch ( rc ) { case LDAP_SUCCESS: rc = ldif_search_entry( op, rs, e, scope, &fpath ); break; case LDAP_NO_SUCH_OBJECT: /* Only the search baseDN may produce noSuchObject. */ rc = LDAP_OTHER; if ( rs != NULL ) rs->sr_text = "internal error " "(did someone just remove an entry file?)"; Debug( LDAP_DEBUG_ANY, "ldif_search_entry: " "file listed in parent directory does not exist: " "\"%s\"\n", fpath.bv_val, 0, 0 ); break; } } list = ptr->next; SLAP_FREE( ptr ); } while ( list != NULL ); if ( !BER_BVISNULL( &fpath ) ) SLAP_FREE( fpath.bv_val ); } } done: if ( !BER_BVISEMPTY( &dn ) ) ber_memfree( dn.bv_val ); if ( !BER_BVISEMPTY( &ndn ) ) ber_memfree( ndn.bv_val ); return rc; } static int search_tree( Operation *op, SlapReply *rs ) { int rc = LDAP_SUCCESS; Entry *e = NULL; struct berval path; struct berval pdn, pndn; (void) ndn2path( op, &op->o_req_ndn, &path, 1 ); if ( !BER_BVISEMPTY( &op->o_req_ndn ) ) { /* Read baseObject */ dnParent( &op->o_req_dn, &pdn ); dnParent( &op->o_req_ndn, &pndn ); rc = ldif_read_entry( op, path.bv_val, &pdn, &pndn, &e, rs == NULL ? NULL : &rs->sr_text ); } if ( rc == LDAP_SUCCESS ) rc = ldif_search_entry( op, rs, e, op->ors_scope, &path ); ch_free( path.bv_val ); return rc; } /* * Prepare to create or rename an entry: * Check that the entry does not already exist. * Check that the parent entry exists and can have subordinates, * unless need_dir is NULL or adding the suffix entry. * * Return an LDAP result code. May set *text to a message on failure. * If success, set *dnpath to LDIF entry path and *need_dir to * (directory must be created ? dirname : NULL). */ static int ldif_prepare_create( Operation *op, Entry *e, struct berval *dnpath, char **need_dir, const char **text ) { struct ldif_info *li = (struct ldif_info *) op->o_bd->be_private; struct berval *ndn = &e->e_nname; struct berval ppath = BER_BVNULL; struct stat st; Entry *parent = NULL; int rc; if ( op->o_abandon ) return SLAPD_ABANDON; rc = ndn2path( op, ndn, dnpath, 0 ); if ( rc != LDAP_SUCCESS ) { return rc; } if ( stat( dnpath->bv_val, &st ) == 0 ) { /* entry .ldif file */ rc = LDAP_ALREADY_EXISTS; } else if ( errno != ENOENT ) { Debug( LDAP_DEBUG_ANY, "ldif_prepare_create: cannot stat \"%s\": %s\n", dnpath->bv_val, STRERROR( errno ), 0 ); rc = LDAP_OTHER; *text = "internal error (cannot check entry file)"; } else if ( need_dir != NULL ) { *need_dir = NULL; rc = get_parent_path( dnpath, &ppath ); /* If parent dir exists, so does parent .ldif: * The directory gets created after and removed before the .ldif. * Except with the database directory, which has no matching entry. */ if ( rc == LDAP_SUCCESS && stat( ppath.bv_val, &st ) < 0 ) { rc = errno == ENOENT && ppath.bv_len > li->li_base_path.bv_len ? LDAP_NO_SUCH_OBJECT : LDAP_OTHER; } switch ( rc ) { case LDAP_NO_SUCH_OBJECT: /* No parent dir, check parent .ldif */ dir2ldif_name( ppath ); rc = ldif_read_entry( op, ppath.bv_val, NULL, NULL, (op->o_tag != LDAP_REQ_ADD || get_manageDSAit( op ) ? &parent : NULL), text ); switch ( rc ) { case LDAP_SUCCESS: /* Check that parent is not a referral, unless * ldif_back_referrals() already checked. */ if ( parent != NULL ) { int is_ref = is_entry_referral( parent ); entry_free( parent ); if ( is_ref ) { rc = LDAP_AFFECTS_MULTIPLE_DSAS; *text = op->o_tag == LDAP_REQ_MODDN ? "newSuperior is a referral object" : "parent is a referral object"; break; } } /* Must create parent directory. */ ldif2dir_name( ppath ); *need_dir = ppath.bv_val; break; case LDAP_NO_SUCH_OBJECT: *text = op->o_tag == LDAP_REQ_MODDN ? "newSuperior object does not exist" : "parent does not exist"; break; } break; case LDAP_OTHER: Debug( LDAP_DEBUG_ANY, "ldif_prepare_create: cannot stat \"%s\" parent dir: %s\n", ndn->bv_val, STRERROR( errno ), 0 ); *text = "internal error (cannot stat parent dir)"; break; } if ( *need_dir == NULL && ppath.bv_val != NULL ) SLAP_FREE( ppath.bv_val ); } if ( rc != LDAP_SUCCESS ) { SLAP_FREE( dnpath->bv_val ); BER_BVZERO( dnpath ); } return rc; } static int apply_modify_to_entry( Entry *entry, Modifications *modlist, Operation *op, SlapReply *rs, char *textbuf ) { int rc = modlist ? LDAP_UNWILLING_TO_PERFORM : LDAP_SUCCESS; int is_oc = 0; Modification *mods; if (!acl_check_modlist(op, entry, modlist)) { return LDAP_INSUFFICIENT_ACCESS; } for (; modlist != NULL; modlist = modlist->sml_next) { mods = &modlist->sml_mod; if ( mods->sm_desc == slap_schema.si_ad_objectClass ) { is_oc = 1; } switch (mods->sm_op) { case LDAP_MOD_ADD: rc = modify_add_values(entry, mods, get_permissiveModify(op), &rs->sr_text, textbuf, SLAP_TEXT_BUFLEN ); break; case LDAP_MOD_DELETE: rc = modify_delete_values(entry, mods, get_permissiveModify(op), &rs->sr_text, textbuf, SLAP_TEXT_BUFLEN ); break; case LDAP_MOD_REPLACE: rc = modify_replace_values(entry, mods, get_permissiveModify(op), &rs->sr_text, textbuf, SLAP_TEXT_BUFLEN ); break; case LDAP_MOD_INCREMENT: rc = modify_increment_values( entry, mods, get_permissiveModify(op), &rs->sr_text, textbuf, SLAP_TEXT_BUFLEN ); break; case SLAP_MOD_SOFTADD: mods->sm_op = LDAP_MOD_ADD; rc = modify_add_values(entry, mods, get_permissiveModify(op), &rs->sr_text, textbuf, SLAP_TEXT_BUFLEN ); mods->sm_op = SLAP_MOD_SOFTADD; if (rc == LDAP_TYPE_OR_VALUE_EXISTS) { rc = LDAP_SUCCESS; } break; case SLAP_MOD_SOFTDEL: mods->sm_op = LDAP_MOD_DELETE; rc = modify_delete_values(entry, mods, get_permissiveModify(op), &rs->sr_text, textbuf, SLAP_TEXT_BUFLEN ); mods->sm_op = SLAP_MOD_SOFTDEL; if (rc == LDAP_NO_SUCH_ATTRIBUTE) { rc = LDAP_SUCCESS; } break; case SLAP_MOD_ADD_IF_NOT_PRESENT: if ( attr_find( entry->e_attrs, mods->sm_desc ) ) { rc = LDAP_SUCCESS; break; } mods->sm_op = LDAP_MOD_ADD; rc = modify_add_values(entry, mods, get_permissiveModify(op), &rs->sr_text, textbuf, SLAP_TEXT_BUFLEN ); mods->sm_op = SLAP_MOD_ADD_IF_NOT_PRESENT; break; } if(rc != LDAP_SUCCESS) break; } if ( rc == LDAP_SUCCESS ) { rs->sr_text = NULL; /* Needed at least with SLAP_MOD_SOFTADD */ if ( is_oc ) { entry->e_ocflags = 0; } /* check that the entry still obeys the schema */ rc = entry_schema_check( op, entry, NULL, 0, 0, NULL, &rs->sr_text, textbuf, SLAP_TEXT_BUFLEN ); } return rc; } static int ldif_back_referrals( Operation *op, SlapReply *rs ) { struct ldif_info *li = (struct ldif_info *) op->o_bd->be_private; struct berval path, dn = op->o_req_dn, ndn = op->o_req_ndn; ber_len_t min_dnlen; Entry *entry = NULL, **entryp; BerVarray ref; int rc; min_dnlen = op->o_bd->be_nsuffix[0].bv_len; if ( min_dnlen == 0 ) { /* Catch root DSE (empty DN), it is not a referral */ min_dnlen = 1; } if ( ndn2path( op, &ndn, &path, 0 ) != LDAP_SUCCESS ) { return LDAP_SUCCESS; /* Root DSE again */ } entryp = get_manageDSAit( op ) ? NULL : &entry; ldap_pvt_thread_rdwr_rlock( &li->li_rdwr ); for (;;) { dnParent( &dn, &dn ); dnParent( &ndn, &ndn ); rc = ldif_read_entry( op, path.bv_val, &dn, &ndn, entryp, &rs->sr_text ); if ( rc != LDAP_NO_SUCH_OBJECT ) break; rc = LDAP_SUCCESS; if ( ndn.bv_len < min_dnlen ) break; (void) get_parent_path( &path, NULL ); dir2ldif_name( path ); entryp = &entry; } ldap_pvt_thread_rdwr_runlock( &li->li_rdwr ); SLAP_FREE( path.bv_val ); if ( entry != NULL ) { if ( is_entry_referral( entry ) ) { Debug( LDAP_DEBUG_TRACE, "ldif_back_referrals: tag=%lu target=\"%s\" matched=\"%s\"\n", (unsigned long) op->o_tag, op->o_req_dn.bv_val, entry->e_dn ); ref = get_entry_referrals( op, entry ); rs->sr_ref = referral_rewrite( ref, &entry->e_name, &op->o_req_dn, op->o_tag == LDAP_REQ_SEARCH ? op->ors_scope : LDAP_SCOPE_DEFAULT ); ber_bvarray_free( ref ); if ( rs->sr_ref != NULL ) { /* send referral */ rc = rs->sr_err = LDAP_REFERRAL; rs->sr_matched = entry->e_dn; send_ldap_result( op, rs ); ber_bvarray_free( rs->sr_ref ); rs->sr_ref = NULL; } else { rc = LDAP_OTHER; rs->sr_text = "bad referral object"; } rs->sr_matched = NULL; } entry_free( entry ); } return rc; } /* LDAP operations */ static int ldif_back_bind( Operation *op, SlapReply *rs ) { struct ldif_info *li; Attribute *a; AttributeDescription *password = slap_schema.si_ad_userPassword; int return_val; Entry *entry = NULL; switch ( be_rootdn_bind( op, rs ) ) { case SLAP_CB_CONTINUE: break; default: /* in case of success, front end will send result; * otherwise, be_rootdn_bind() did */ return rs->sr_err; } li = (struct ldif_info *) op->o_bd->be_private; ldap_pvt_thread_rdwr_rlock(&li->li_rdwr); return_val = get_entry(op, &entry, NULL, NULL); /* no object is found for them */ if(return_val != LDAP_SUCCESS) { rs->sr_err = return_val = LDAP_INVALID_CREDENTIALS; goto return_result; } /* they don't have userpassword */ if((a = attr_find(entry->e_attrs, password)) == NULL) { rs->sr_err = LDAP_INAPPROPRIATE_AUTH; return_val = 1; goto return_result; } /* authentication actually failed */ if(slap_passwd_check(op, entry, a, &op->oq_bind.rb_cred, &rs->sr_text) != 0) { rs->sr_err = LDAP_INVALID_CREDENTIALS; return_val = 1; goto return_result; } /* let the front-end send success */ return_val = LDAP_SUCCESS; return_result: ldap_pvt_thread_rdwr_runlock(&li->li_rdwr); if(return_val != LDAP_SUCCESS) send_ldap_result( op, rs ); if(entry != NULL) entry_free(entry); return return_val; } static int ldif_back_search( Operation *op, SlapReply *rs ) { struct ldif_info *li = (struct ldif_info *) op->o_bd->be_private; ldap_pvt_thread_rdwr_rlock(&li->li_rdwr); rs->sr_err = search_tree( op, rs ); ldap_pvt_thread_rdwr_runlock(&li->li_rdwr); send_ldap_result(op, rs); return rs->sr_err; } static int ldif_back_add( Operation *op, SlapReply *rs ) { struct ldif_info *li = (struct ldif_info *) op->o_bd->be_private; Entry * e = op->ora_e; struct berval path; char *parentdir; char textbuf[SLAP_TEXT_BUFLEN]; int rc; Debug( LDAP_DEBUG_TRACE, "ldif_back_add: \"%s\"\n", e->e_dn, 0, 0 ); rc = entry_schema_check( op, e, NULL, 0, 1, NULL, &rs->sr_text, textbuf, sizeof( textbuf ) ); if ( rc != LDAP_SUCCESS ) goto send_res; rc = slap_add_opattrs( op, &rs->sr_text, textbuf, sizeof( textbuf ), 1 ); if ( rc != LDAP_SUCCESS ) goto send_res; ldap_pvt_thread_mutex_lock( &li->li_modop_mutex ); rc = ldif_prepare_create( op, e, &path, &parentdir, &rs->sr_text ); if ( rc == LDAP_SUCCESS ) { ldap_pvt_thread_rdwr_wlock( &li->li_rdwr ); rc = ldif_write_entry( op, e, &path, parentdir, &rs->sr_text ); ldap_pvt_thread_rdwr_wunlock( &li->li_rdwr ); SLAP_FREE( path.bv_val ); if ( parentdir != NULL ) SLAP_FREE( parentdir ); } ldap_pvt_thread_mutex_unlock( &li->li_modop_mutex ); send_res: rs->sr_err = rc; Debug( LDAP_DEBUG_TRACE, "ldif_back_add: err: %d text: %s\n", rc, rs->sr_text ? rs->sr_text : "", 0 ); send_ldap_result( op, rs ); slap_graduate_commit_csn( op ); rs->sr_text = NULL; /* remove possible pointer to textbuf */ return rs->sr_err; } static int ldif_back_modify( Operation *op, SlapReply *rs ) { struct ldif_info *li = (struct ldif_info *) op->o_bd->be_private; Modifications * modlst = op->orm_modlist; struct berval path; Entry *entry; char textbuf[SLAP_TEXT_BUFLEN]; int rc; slap_mods_opattrs( op, &op->orm_modlist, 1 ); ldap_pvt_thread_mutex_lock( &li->li_modop_mutex ); rc = get_entry( op, &entry, &path, &rs->sr_text ); if ( rc == LDAP_SUCCESS ) { rc = apply_modify_to_entry( entry, modlst, op, rs, textbuf ); if ( rc == LDAP_SUCCESS ) { ldap_pvt_thread_rdwr_wlock( &li->li_rdwr ); rc = ldif_write_entry( op, entry, &path, NULL, &rs->sr_text ); ldap_pvt_thread_rdwr_wunlock( &li->li_rdwr ); } entry_free( entry ); SLAP_FREE( path.bv_val ); } ldap_pvt_thread_mutex_unlock( &li->li_modop_mutex ); rs->sr_err = rc; send_ldap_result( op, rs ); slap_graduate_commit_csn( op ); rs->sr_text = NULL; /* remove possible pointer to textbuf */ return rs->sr_err; } static int ldif_back_delete( Operation *op, SlapReply *rs ) { struct ldif_info *li = (struct ldif_info *) op->o_bd->be_private; struct berval path; int rc = LDAP_SUCCESS; if ( BER_BVISEMPTY( &op->o_csn )) { struct berval csn; char csnbuf[LDAP_PVT_CSNSTR_BUFSIZE]; csn.bv_val = csnbuf; csn.bv_len = sizeof( csnbuf ); slap_get_csn( op, &csn, 1 ); } ldap_pvt_thread_mutex_lock( &li->li_modop_mutex ); ldap_pvt_thread_rdwr_wlock( &li->li_rdwr ); if ( op->o_abandon ) { rc = SLAPD_ABANDON; goto done; } rc = ndn2path( op, &op->o_req_ndn, &path, 0 ); if ( rc != LDAP_SUCCESS ) { goto done; } ldif2dir_len( path ); ldif2dir_name( path ); if ( rmdir( path.bv_val ) < 0 ) { switch ( errno ) { case ENOTEMPTY: rc = LDAP_NOT_ALLOWED_ON_NONLEAF; break; case ENOENT: /* is leaf, go on */ break; default: rc = LDAP_OTHER; rs->sr_text = "internal error (cannot delete subtree directory)"; break; } } if ( rc == LDAP_SUCCESS ) { dir2ldif_name( path ); if ( unlink( path.bv_val ) < 0 ) { rc = LDAP_NO_SUCH_OBJECT; if ( errno != ENOENT ) { rc = LDAP_OTHER; rs->sr_text = "internal error (cannot delete entry file)"; } } } if ( rc == LDAP_OTHER ) { Debug( LDAP_DEBUG_ANY, "ldif_back_delete: %s \"%s\": %s\n", "cannot delete", path.bv_val, STRERROR( errno ) ); } SLAP_FREE( path.bv_val ); done: ldap_pvt_thread_rdwr_wunlock( &li->li_rdwr ); ldap_pvt_thread_mutex_unlock( &li->li_modop_mutex ); rs->sr_err = rc; send_ldap_result( op, rs ); slap_graduate_commit_csn( op ); return rs->sr_err; } static int ldif_move_entry( Operation *op, Entry *entry, int same_ndn, struct berval *oldpath, const char **text ) { struct ldif_info *li = (struct ldif_info *) op->o_bd->be_private; struct berval newpath; char *parentdir = NULL, *trash; int rc, rename_res; if ( same_ndn ) { rc = LDAP_SUCCESS; newpath = *oldpath; } else { rc = ldif_prepare_create( op, entry, &newpath, op->orr_newSup ? &parentdir : NULL, text ); } if ( rc == LDAP_SUCCESS ) { ldap_pvt_thread_rdwr_wlock( &li->li_rdwr ); rc = ldif_write_entry( op, entry, &newpath, parentdir, text ); if ( rc == LDAP_SUCCESS && !same_ndn ) { trash = oldpath->bv_val; /* will be .ldif file to delete */ ldif2dir_len( newpath ); ldif2dir_len( *oldpath ); /* Move subdir before deleting old entry, * so .ldif always exists if subdir does. */ ldif2dir_name( newpath ); ldif2dir_name( *oldpath ); rename_res = move_dir( oldpath->bv_val, newpath.bv_val ); if ( rename_res != 0 && errno != ENOENT ) { rc = LDAP_OTHER; *text = "internal error (cannot move this subtree)"; trash = newpath.bv_val; } /* Delete old entry, or if error undo change */ for (;;) { dir2ldif_name( newpath ); dir2ldif_name( *oldpath ); if ( unlink( trash ) == 0 ) break; if ( rc == LDAP_SUCCESS ) { /* Prepare to undo change and return failure */ rc = LDAP_OTHER; *text = "internal error (cannot move this entry)"; trash = newpath.bv_val; if ( rename_res != 0 ) continue; /* First move subdirectory back */ ldif2dir_name( newpath ); ldif2dir_name( *oldpath ); if ( move_dir( newpath.bv_val, oldpath->bv_val ) == 0 ) continue; } *text = "added new but couldn't delete old entry!"; break; } if ( rc != LDAP_SUCCESS ) { char s[128]; snprintf( s, sizeof s, "%s (%s)", *text, STRERROR( errno )); Debug( LDAP_DEBUG_ANY, "ldif_move_entry: %s: \"%s\" -> \"%s\"\n", s, op->o_req_dn.bv_val, entry->e_dn ); } } ldap_pvt_thread_rdwr_wunlock( &li->li_rdwr ); if ( !same_ndn ) SLAP_FREE( newpath.bv_val ); if ( parentdir != NULL ) SLAP_FREE( parentdir ); } return rc; } static int ldif_back_modrdn( Operation *op, SlapReply *rs ) { struct ldif_info *li = (struct ldif_info *) op->o_bd->be_private; struct berval new_dn = BER_BVNULL, new_ndn = BER_BVNULL; struct berval p_dn, old_path; Entry *entry; char textbuf[SLAP_TEXT_BUFLEN]; int rc, same_ndn; slap_mods_opattrs( op, &op->orr_modlist, 1 ); ldap_pvt_thread_mutex_lock( &li->li_modop_mutex ); rc = get_entry( op, &entry, &old_path, &rs->sr_text ); if ( rc == LDAP_SUCCESS ) { /* build new dn, and new ndn for the entry */ if ( op->oq_modrdn.rs_newSup != NULL ) { p_dn = *op->oq_modrdn.rs_newSup; } else { dnParent( &entry->e_name, &p_dn ); } build_new_dn( &new_dn, &p_dn, &op->oq_modrdn.rs_newrdn, NULL ); dnNormalize( 0, NULL, NULL, &new_dn, &new_ndn, NULL ); same_ndn = !ber_bvcmp( &entry->e_nname, &new_ndn ); ber_memfree_x( entry->e_name.bv_val, NULL ); ber_memfree_x( entry->e_nname.bv_val, NULL ); entry->e_name = new_dn; entry->e_nname = new_ndn; /* perform the modifications */ rc = apply_modify_to_entry( entry, op->orr_modlist, op, rs, textbuf ); if ( rc == LDAP_SUCCESS ) rc = ldif_move_entry( op, entry, same_ndn, &old_path, &rs->sr_text ); entry_free( entry ); SLAP_FREE( old_path.bv_val ); } ldap_pvt_thread_mutex_unlock( &li->li_modop_mutex ); rs->sr_err = rc; send_ldap_result( op, rs ); slap_graduate_commit_csn( op ); rs->sr_text = NULL; /* remove possible pointer to textbuf */ return rs->sr_err; } /* Return LDAP_SUCCESS IFF we retrieve the specified entry. */ static int ldif_back_entry_get( Operation *op, struct berval *ndn, ObjectClass *oc, AttributeDescription *at, int rw, Entry **e ) { struct ldif_info *li = (struct ldif_info *) op->o_bd->be_private; struct berval op_dn = op->o_req_dn, op_ndn = op->o_req_ndn; int rc; assert( ndn != NULL ); assert( !BER_BVISNULL( ndn ) ); ldap_pvt_thread_rdwr_rlock( &li->li_rdwr ); op->o_req_dn = *ndn; op->o_req_ndn = *ndn; rc = get_entry( op, e, NULL, NULL ); op->o_req_dn = op_dn; op->o_req_ndn = op_ndn; ldap_pvt_thread_rdwr_runlock( &li->li_rdwr ); if ( rc == LDAP_SUCCESS && oc && !is_entry_objectclass_or_sub( *e, oc ) ) { rc = LDAP_NO_SUCH_ATTRIBUTE; entry_free( *e ); *e = NULL; } return rc; } /* Slap tools */ static int ldif_tool_entry_open( BackendDB *be, int mode ) { struct ldif_tool *tl = &((struct ldif_info *) be->be_private)->li_tool; tl->ecurrent = 0; return 0; } static int ldif_tool_entry_close( BackendDB *be ) { struct ldif_tool *tl = &((struct ldif_info *) be->be_private)->li_tool; Entry **entries = tl->entries; ID i; for ( i = tl->ecount; i--; ) if ( entries[i] ) entry_free( entries[i] ); SLAP_FREE( entries ); tl->entries = NULL; tl->ecount = tl->elen = 0; return 0; } static ID ldif_tool_entry_next( BackendDB *be ) { struct ldif_tool *tl = &((struct ldif_info *) be->be_private)->li_tool; do { Entry *e = tl->entries[ tl->ecurrent ]; if ( tl->ecurrent >= tl->ecount ) { return NOID; } ++tl->ecurrent; if ( tl->tl_base && !dnIsSuffixScope( &e->e_nname, tl->tl_base, tl->tl_scope ) ) { continue; } if ( tl->tl_filter && test_filter( NULL, e, tl->tl_filter ) != LDAP_COMPARE_TRUE ) { continue; } break; } while ( 1 ); return tl->ecurrent; } static ID ldif_tool_entry_first_x( BackendDB *be, struct berval *base, int scope, Filter *f ) { struct ldif_tool *tl = &((struct ldif_info *) be->be_private)->li_tool; tl->tl_base = base; tl->tl_scope = scope; tl->tl_filter = f; if ( tl->entries == NULL ) { Operation op = {0}; op.o_bd = be; op.o_req_dn = *be->be_suffix; op.o_req_ndn = *be->be_nsuffix; op.ors_scope = LDAP_SCOPE_SUBTREE; if ( search_tree( &op, NULL ) != LDAP_SUCCESS ) { tl->ecurrent = tl->ecount; /* fail ldif_tool_entry_next() */ return 0; /* fail ldif_tool_entry_get() */ } } return ldif_tool_entry_next( be ); } static Entry * ldif_tool_entry_get( BackendDB *be, ID id ) { struct ldif_tool *tl = &((struct ldif_info *) be->be_private)->li_tool; Entry *e = NULL; --id; if ( id < tl->ecount ) { e = tl->entries[id]; tl->entries[id] = NULL; } return e; } static ID ldif_tool_entry_put( BackendDB *be, Entry *e, struct berval *text ) { int rc; const char *errmsg = NULL; struct berval path; char *parentdir; Operation op = {0}; op.o_bd = be; rc = ldif_prepare_create( &op, e, &path, &parentdir, &errmsg ); if ( rc == LDAP_SUCCESS ) { rc = ldif_write_entry( &op, e, &path, parentdir, &errmsg ); SLAP_FREE( path.bv_val ); if ( parentdir != NULL ) SLAP_FREE( parentdir ); if ( rc == LDAP_SUCCESS ) return 1; } if ( errmsg == NULL && rc != LDAP_OTHER ) errmsg = ldap_err2string( rc ); if ( errmsg != NULL ) snprintf( text->bv_val, text->bv_len, "%s", errmsg ); return NOID; } /* Setup */ static int ldif_back_db_init( BackendDB *be, ConfigReply *cr ) { struct ldif_info *li; li = ch_calloc( 1, sizeof(struct ldif_info) ); be->be_private = li; be->be_cf_ocs = ldifocs; ldap_pvt_thread_mutex_init( &li->li_modop_mutex ); ldap_pvt_thread_rdwr_init( &li->li_rdwr ); SLAP_DBFLAGS( be ) |= SLAP_DBFLAG_ONE_SUFFIX; return 0; } static int ldif_back_db_destroy( Backend *be, ConfigReply *cr ) { struct ldif_info *li = be->be_private; ch_free( li->li_base_path.bv_val ); ldap_pvt_thread_rdwr_destroy( &li->li_rdwr ); ldap_pvt_thread_mutex_destroy( &li->li_modop_mutex ); free( be->be_private ); return 0; } static int ldif_back_db_open( Backend *be, ConfigReply *cr ) { struct ldif_info *li = (struct ldif_info *) be->be_private; if( BER_BVISEMPTY(&li->li_base_path)) {/* missing base path */ Debug( LDAP_DEBUG_ANY, "missing base path for back-ldif\n", 0, 0, 0); return 1; } return 0; } int ldif_back_initialize( BackendInfo *bi ) { static char *controls[] = { LDAP_CONTROL_MANAGEDSAIT, NULL }; int rc; bi->bi_flags |= SLAP_BFLAG_INCREMENT | SLAP_BFLAG_REFERRALS; bi->bi_controls = controls; bi->bi_open = 0; bi->bi_close = 0; bi->bi_config = 0; bi->bi_destroy = 0; bi->bi_db_init = ldif_back_db_init; bi->bi_db_config = config_generic_wrapper; bi->bi_db_open = ldif_back_db_open; bi->bi_db_close = 0; bi->bi_db_destroy = ldif_back_db_destroy; bi->bi_op_bind = ldif_back_bind; bi->bi_op_unbind = 0; bi->bi_op_search = ldif_back_search; bi->bi_op_compare = 0; bi->bi_op_modify = ldif_back_modify; bi->bi_op_modrdn = ldif_back_modrdn; bi->bi_op_add = ldif_back_add; bi->bi_op_delete = ldif_back_delete; bi->bi_op_abandon = 0; bi->bi_extended = 0; bi->bi_chk_referrals = ldif_back_referrals; bi->bi_connection_init = 0; bi->bi_connection_destroy = 0; bi->bi_entry_get_rw = ldif_back_entry_get; #if 0 /* NOTE: uncomment to completely disable access control */ bi->bi_access_allowed = slap_access_always_allowed; #endif bi->bi_tool_entry_open = ldif_tool_entry_open; bi->bi_tool_entry_close = ldif_tool_entry_close; bi->bi_tool_entry_first = backend_tool_entry_first; bi->bi_tool_entry_first_x = ldif_tool_entry_first_x; bi->bi_tool_entry_next = ldif_tool_entry_next; bi->bi_tool_entry_get = ldif_tool_entry_get; bi->bi_tool_entry_put = ldif_tool_entry_put; bi->bi_tool_entry_reindex = 0; bi->bi_tool_sync = 0; bi->bi_tool_dn2id_get = 0; bi->bi_tool_entry_modify = 0; bi->bi_cf_ocs = ldifocs; rc = config_register_schema( ldifcfg, ldifocs ); if ( rc ) return rc; return 0; }