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676599b36a
This prevents injection of ':' and '\n' into output functions which use the NSS files database syntax. Critical fields (user/group names and file system paths) are checked strictly. For backwards compatibility, the GECOS field is rewritten instead. The getent program is adjusted to use the put*ent functions in libc, instead of local copies. This changes the behavior of getent if user names start with '-' or '+'.
15 lines
444 B
C
15 lines
444 B
C
#ifndef _NSS_H
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#include <nss/nss.h>
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#define NSS_INVALID_FIELD_CHARACTERS ":\n"
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extern const char __nss_invalid_field_characters[] attribute_hidden;
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_Bool __nss_valid_field (const char *value)
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attribute_hidden internal_function;
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_Bool __nss_valid_list_field (char **list)
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attribute_hidden internal_function;
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const char *__nss_rewrite_field (const char *value, char **to_be_freed)
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attribute_hidden internal_function;
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#endif /* _NSS_H */
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