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http: Added authentication message header value extraction

Browse Source 
...following recent changes to Curl_base64_decode() rather than trying
to parse a header line for the authentication mechanisms which is CRLF
terminated and inline zero terminate it.
This commit is contained in:
Steve Holme 2013-10-30 21:33:28 +00:00
parent 753d44fa00
commit cdccb42267
3 changed files with 32 additions and 40 deletions
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4
lib/curl_ntlm.c
View File

@ -77,10 +77,6 @@ CURLcode Curl_input_ntlm(struct connectdata *conn,
ntlm = proxy ? &conn->proxyntlm : &conn->ntlm;
/* skip initial whitespaces */
while(*header && ISSPACE(*header))
header++;
if(checkprefix("NTLM", header)) {
header += strlen("NTLM");

64
lib/http.c
View File

@ -701,7 +701,7 @@ Curl_http_output_auth(struct connectdata *conn,
CURLcode Curl_http_input_auth(struct connectdata *conn,
int httpcode,
const char *header) /* the first non-space */
const char *auth) /* the first non-space */
{
/*
* This resource requires authentication
@ -709,24 +709,17 @@ CURLcode Curl_http_input_auth(struct connectdata *conn,
struct SessionHandle *data = conn->data;
unsigned long *availp;
const char *start;
struct auth *authp;
if(httpcode == 407) {
start = header+strlen("Proxy-authenticate:");
availp = &data->info.proxyauthavail;
authp = &data->state.authproxy;
}
else {
start = header+strlen("WWW-Authenticate:");
availp = &data->info.httpauthavail;
authp = &data->state.authhost;
}
/* pass all white spaces */
while(*start && ISSPACE(*start))
start++;
/*
* Here we check if we want the specific single authentication (using ==) and
* if we do, we initiate usage of it.
@ -744,10 +737,10 @@ CURLcode Curl_http_input_auth(struct connectdata *conn,
*
*/
while(*start) {
while(*auth) {
#ifdef USE_HTTP_NEGOTIATE
if(checkprefix("GSS-Negotiate", start) ||
checkprefix("Negotiate", start)) {
if(checkprefix("GSS-Negotiate", auth) ||
checkprefix("Negotiate", auth)) {
int neg;
*availp |= CURLAUTH_GSSNEGOTIATE;
authp->avail |= CURLAUTH_GSSNEGOTIATE;
@ -760,7 +753,7 @@ CURLcode Curl_http_input_auth(struct connectdata *conn,
data->state.authproblem = TRUE;
}
else {
neg = Curl_input_negotiate(conn, (bool)(httpcode == 407), start);
neg = Curl_input_negotiate(conn, (bool)(httpcode == 407), auth);
if(neg == 0) {
DEBUGASSERT(!data->req.newurl);
data->req.newurl = strdup(data->change.url);
@ -779,14 +772,14 @@ CURLcode Curl_http_input_auth(struct connectdata *conn,
#endif
#ifdef USE_NTLM
/* NTLM support requires the SSL crypto libs */
if(checkprefix("NTLM", start)) {
if(checkprefix("NTLM", auth)) {
*availp |= CURLAUTH_NTLM;
authp->avail |= CURLAUTH_NTLM;
if(authp->picked == CURLAUTH_NTLM ||
authp->picked == CURLAUTH_NTLM_WB) {
/* NTLM authentication is picked and activated */
CURLcode ntlm =
Curl_input_ntlm(conn, (httpcode == 407)?TRUE:FALSE, start);
Curl_input_ntlm(conn, (httpcode == 407)?TRUE:FALSE, auth);
if(CURLE_OK == ntlm) {
data->state.authproblem = FALSE;
#ifdef NTLM_WB_ENABLED
@ -798,14 +791,14 @@ CURLcode Curl_http_input_auth(struct connectdata *conn,
/* Get the challenge-message which will be passed to
* ntlm_auth for generating the type 3 message later */
while(*start && ISSPACE(*start))
start++;
if(checkprefix("NTLM", start)) {
start += strlen("NTLM");
while(*start && ISSPACE(*start))
start++;
if(*start)
if((conn->challenge_header = strdup(start)) == NULL)
while(*auth && ISSPACE(*auth))
auth++;
if(checkprefix("NTLM", auth)) {
auth += strlen("NTLM");
while(*auth && ISSPACE(*auth))
auth++;
if(*auth)
if((conn->challenge_header = strdup(auth)) == NULL)
return CURLE_OUT_OF_MEMORY;
}
}
@ -820,7 +813,7 @@ CURLcode Curl_http_input_auth(struct connectdata *conn,
else
#endif
#ifndef CURL_DISABLE_CRYPTO_AUTH
if(checkprefix("Digest", start)) {
if(checkprefix("Digest", auth)) {
if((authp->avail & CURLAUTH_DIGEST) != 0) {
infof(data, "Ignoring duplicate digest auth header.\n");
}
@ -833,7 +826,7 @@ CURLcode Curl_http_input_auth(struct connectdata *conn,
* authentication isn't activated yet, as we need to store the
* incoming data from this header in case we are gonna use
* Digest. */
dig = Curl_input_digest(conn, (httpcode == 407)?TRUE:FALSE, start);
dig = Curl_input_digest(conn, (httpcode == 407)?TRUE:FALSE, auth);
if(CURLDIGEST_FINE != dig) {
infof(data, "Authentication problem. Ignoring this.\n");
@ -843,7 +836,7 @@ CURLcode Curl_http_input_auth(struct connectdata *conn,
}
else
#endif
if(checkprefix("Basic", start)) {
if(checkprefix("Basic", auth)) {
*availp |= CURLAUTH_BASIC;
authp->avail |= CURLAUTH_BASIC;
if(authp->picked == CURLAUTH_BASIC) {
@ -857,12 +850,12 @@ CURLcode Curl_http_input_auth(struct connectdata *conn,
}
/* there may be multiple methods on one line, so keep reading */
while(*start && *start != ',') /* read up to the next comma */
start++;
if(*start == ',') /* if we're on a comma, skip it */
start++;
while(*start && ISSPACE(*start))
start++;
while(*auth && *auth != ',') /* read up to the next comma */
auth++;
if(*auth == ',') /* if we're on a comma, skip it */
auth++;
while(*auth && ISSPACE(*auth))
auth++;
}
return CURLE_OK;
}
@ -3455,7 +3448,14 @@ CURLcode Curl_http_readwrite_headers(struct SessionHandle *data,
(401 == k->httpcode)) ||
(checkprefix("Proxy-authenticate:", k->p) &&
(407 == k->httpcode))) {
result = Curl_http_input_auth(conn, k->httpcode, k->p);
char *auth = copy_header_value(k->p);
if(!auth)
return CURLE_OUT_OF_MEMORY;
result = Curl_http_input_auth(conn, k->httpcode, auth);
Curl_safefree(auth);
if(result)
return result;
}

4
lib/http_digest.c
View File

@ -141,10 +141,6 @@ CURLdigest Curl_input_digest(struct connectdata *conn,
d = &data->state.digest;
}
/* skip initial whitespaces */
while(*header && ISSPACE(*header))
header++;
if(checkprefix("Digest", header)) {
header += strlen("Digest");