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smtp: Reworked smtp_endofresp() to allow for extra capability detection

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This commit is contained in:
Steve Holme 2013-02-08 21:19:34 +00:00
parent dda53476ca
commit 40f9bb787f
1 changed files with 49 additions and 48 deletions
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97
lib/smtp.c
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@ -204,9 +204,9 @@ static const struct Curl_handler Curl_handler_smtps_proxy = {
#endif
#endif
/* Function that checks for an ending smtp status code at the start of the
given string, but also detects the supported authentication mechanisms
from the EHLO AUTH response. */
/* 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. */
static int smtp_endofresp(struct pingpong *pp, int *resp)
{
char *line = pp->linestart_resp;
@ -223,55 +223,56 @@ static int smtp_endofresp(struct pingpong *pp, int *resp)
if((result = (line[3] == ' ')) != 0)
*resp = curlx_sltosi(strtol(line, NULL, 10));
line += 4;
len -= 4;
/* Are we processing EHLO command responses? */
if(smtpc->state == SMTP_EHLO) {
line += 4;
len -= 4;
/* Does the server support the SIZE capability? */
if(smtpc->state == SMTP_EHLO && len >= 4 && !memcmp(line, "SIZE", 4)) {
DEBUGF(infof(conn->data, "Server supports SIZE extension.\n"));
smtpc->size_supported = true;
}
/* Does the server support the SIZE capability? */
if(len >= 4 && !memcmp(line, "SIZE", 4))
smtpc->size_supported = TRUE;
/* Do we have the authentication mechanism list? */
if(smtpc->state == SMTP_EHLO && len >= 5 && !memcmp(line, "AUTH ", 5)) {
line += 5;
len -= 5;
/* Do we have the authentication mechanism list? */
else if(len >= 5 && !memcmp(line, "AUTH ", 5)) {
line += 5;
len -= 5;
for(;;) {
while(len &&
(*line == ' ' || *line == '\t' ||
*line == '\r' || *line == '\n')) {
line++;
len--;
for(;;) {
while(len &&
(*line == ' ' || *line == '\t' ||
*line == '\r' || *line == '\n')) {
line++;
len--;
}
if(!len)
break;
/* Extract the word */
for(wordlen = 0; wordlen < len && line[wordlen] != ' ' &&
line[wordlen] != '\t' && line[wordlen] != '\r' &&
line[wordlen] != '\n';)
wordlen++;
/* Test the word for a matching authentication mechanism */
if(wordlen == 5 && !memcmp(line, "LOGIN", 5))
smtpc->authmechs |= SASL_MECH_LOGIN;
else if(wordlen == 5 && !memcmp(line, "PLAIN", 5))
smtpc->authmechs |= SASL_MECH_PLAIN;
else if(wordlen == 8 && !memcmp(line, "CRAM-MD5", 8))
smtpc->authmechs |= SASL_MECH_CRAM_MD5;
else if(wordlen == 10 && !memcmp(line, "DIGEST-MD5", 10))
smtpc->authmechs |= SASL_MECH_DIGEST_MD5;
else if(wordlen == 6 && !memcmp(line, "GSSAPI", 6))
smtpc->authmechs |= SASL_MECH_GSSAPI;
else if(wordlen == 8 && !memcmp(line, "EXTERNAL", 8))
smtpc->authmechs |= SASL_MECH_EXTERNAL;
else if(wordlen == 4 && !memcmp(line, "NTLM", 4))
smtpc->authmechs |= SASL_MECH_NTLM;
line += wordlen;
len -= wordlen;
}
if(!len)
break;
/* Extract the word */
for(wordlen = 0; wordlen < len && line[wordlen] != ' ' &&
line[wordlen] != '\t' && line[wordlen] != '\r' &&
line[wordlen] != '\n';)
wordlen++;
/* Test the word for a matching authentication mechanism */
if(wordlen == 5 && !memcmp(line, "LOGIN", 5))
smtpc->authmechs |= SASL_MECH_LOGIN;
else if(wordlen == 5 && !memcmp(line, "PLAIN", 5))
smtpc->authmechs |= SASL_MECH_PLAIN;
else if(wordlen == 8 && !memcmp(line, "CRAM-MD5", 8))
smtpc->authmechs |= SASL_MECH_CRAM_MD5;
else if(wordlen == 10 && !memcmp(line, "DIGEST-MD5", 10))
smtpc->authmechs |= SASL_MECH_DIGEST_MD5;
else if(wordlen == 6 && !memcmp(line, "GSSAPI", 6))
smtpc->authmechs |= SASL_MECH_GSSAPI;
else if(wordlen == 8 && !memcmp(line, "EXTERNAL", 8))
smtpc->authmechs |= SASL_MECH_EXTERNAL;
else if(wordlen == 4 && !memcmp(line, "NTLM", 4))
smtpc->authmechs |= SASL_MECH_NTLM;
line += wordlen;
len -= wordlen;
}
}