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Corrected Host header handling (fixes #2477)

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This commit is contained in:
Ben Brown 2013-02-19 20:03:57 +00:00
parent b720a89d55
commit 23181d6f4f
1 changed files with 30 additions and 3 deletions
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27
src/weighttp.c
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@ -76,9 +76,11 @@ static char *forge_request(char *url, char keep_alive, char **host, uint16_t *po
uint32_t len;
uint8_t i;
uint8_t have_user_agent;
char *header_host;
*host = NULL;
*port = 0;
header_host = NULL;
if (strncmp(url, "http://", 7) == 0)
url += 7;
@ -137,6 +139,25 @@ static char *forge_request(char *url, char keep_alive, char **host, uint16_t *po
have_user_agent = 0;
for (i = 0; i < headers_num; i++) {
if (strncmp(headers[i], "Host:", sizeof("Host:")-1) == 0) {
if (header_host) {
W_ERROR("%s", "Duplicate Host header");
free(*host);
return NULL;
}
header_host = headers[i] + 5;
if (*header_host == ' ')
header_host++;
if (strlen(header_host) == 0) {
W_ERROR("%s", "Invalid Host header");
free(*host);
return NULL;
}
len += strlen(header_host);
continue;
}
len += strlen(headers[i]) + strlen("\r\n");
if (strncmp(headers[i], "User-Agent: ", sizeof("User-Agent: ")-1) == 0)
have_user_agent = 1;
@ -150,9 +171,13 @@ static char *forge_request(char *url, char keep_alive, char **host, uint16_t *po
strcpy(req, "GET ");
strcat(req, url);
strcat(req, " HTTP/1.1\r\nHost: ");
if (header_host) {
strcat(req, header_host);
} else {
strcat(req, *host);
if (*port != 80)
sprintf(req + strlen(req), ":%"PRIu16, *port);
}
strcat(req, "\r\n");
@ -160,6 +185,8 @@ static char *forge_request(char *url, char keep_alive, char **host, uint16_t *po
sprintf(req + strlen(req), "User-Agent: weighttp/" VERSION "\r\n");
for (i = 0; i < headers_num; i++) {
if (strncmp(headers[i], "Host:", sizeof("Host:")-1) == 0)
continue;
strcat(req, headers[i]);
strcat(req, "\r\n");
}