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smtp: Added description comments to all perform based functions

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This commit is contained in:
Steve Holme 2013-04-16 19:40:54 +01:00
parent 686586b0f9
commit f737e3a3dd
1 changed files with 59 additions and 5 deletions
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64
lib/smtp.c
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@ -215,9 +215,14 @@ static void smtp_to_smtps(struct connectdata *conn)
#define smtp_to_smtps(x) Curl_nop_stmt
#endif
/* Function that checks for an ending SMTP status code at the start of the
given string, but also detects various capabilities from the EHLO response
including the supported authentication mechanisms. */
/***********************************************************************
*
* pop3_endofresp()
*
* Checks for an ending SMTP status code at the start of the given string, but
* also detects various capabilities from the EHLO response including the
* supported authentication mechanisms.
*/
static bool smtp_endofresp(struct connectdata *conn, char *line, size_t len,
int *resp)
{
@ -295,7 +300,12 @@ static bool smtp_endofresp(struct connectdata *conn, char *line, size_t len,
return result;
}
/* This is the ONLY way to change SMTP state! */
/***********************************************************************
*
* state()
*
* This is the ONLY way to change SMTP state!
*/
static void state(struct connectdata *conn, smtpstate newstate)
{
struct smtp_conn *smtpc = &conn->proto.smtpc;
@ -333,6 +343,13 @@ static void state(struct connectdata *conn, smtpstate newstate)
smtpc->state = newstate;
}
/***********************************************************************
*
* smtp_state_ehlo()
*
* Sends the EHLO command to not only initialise communication with the ESMTP
* server but to also obtain a list of server side supported capabilities.
*/
static CURLcode smtp_state_ehlo(struct connectdata *conn)
{
CURLcode result = CURLE_OK;
@ -352,6 +369,12 @@ static CURLcode smtp_state_ehlo(struct connectdata *conn)
return result;
}
/***********************************************************************
*
* smtp_state_helo()
*
* Sends the HELO command to initialise communication with the SMTP server.
*/
static CURLcode smtp_state_helo(struct connectdata *conn)
{
CURLcode result = CURLE_OK;
@ -369,6 +392,12 @@ static CURLcode smtp_state_helo(struct connectdata *conn)
return result;
}
/***********************************************************************
*
* smtp_state_starttls()
*
* Sends the STLS command to start the upgrade to TLS.
*/
static CURLcode smtp_state_starttls(struct connectdata *conn)
{
CURLcode result = CURLE_OK;
@ -382,6 +411,12 @@ static CURLcode smtp_state_starttls(struct connectdata *conn)
return result;
}
/***********************************************************************
*
* smtp_state_upgrade_tls()
*
* Performs the upgrade to TLS.
*/
static CURLcode smtp_state_upgrade_tls(struct connectdata *conn)
{
CURLcode result = CURLE_OK;
@ -403,6 +438,13 @@ static CURLcode smtp_state_upgrade_tls(struct connectdata *conn)
return result;
}
/***********************************************************************
*
* smtp_authenticate()
*
* Sends an AUTH command allowing the client to login with the appropriate
* SASL authentication mechanism.
*/
static CURLcode smtp_authenticate(struct connectdata *conn)
{
CURLcode result = CURLE_OK;
@ -497,7 +539,12 @@ static CURLcode smtp_authenticate(struct connectdata *conn)
return result;
}
/* Start the DO phase */
/***********************************************************************
*
* smtp_mail()
*
* Sends an MAIL command to initiate the upload of a message.
*/
static CURLcode smtp_mail(struct connectdata *conn)
{
char *from = NULL;
@ -569,6 +616,13 @@ static CURLcode smtp_mail(struct connectdata *conn)
return result;
}
/***********************************************************************
*
* smtp_rcpt_to()
*
* Sends a RCPT TO command for a given recipient as part of the message upload
* process.
*/
static CURLcode smtp_rcpt_to(struct connectdata *conn)
{
CURLcode result = CURLE_OK;