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With CURLOPT_PROXY_TRANSFER_MODE, avoid sending invalid URLs like

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ftp://example.com;type=i if the user specified ftp://example.com without the
slash.
This commit is contained in:
Michal Marek 2009-08-21 12:15:35 +00:00
parent 8b5102ca83
commit 10f2fa9c72
2 changed files with 19 additions and 7 deletions
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5
CHANGES
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@ -6,6 +6,11 @@
Changelog Changelog
Michal Marek (21 Aug 2009)
- With CURLOPT_PROXY_TRANSFER_MODE, avoid sending invalid URLs like
ftp://example.com;type=i if the user specified ftp://example.com without the
slash.
Daniel Stenberg (21 Aug 2009) Daniel Stenberg (21 Aug 2009)
- Andre Guibert de Bruet pointed out a missing return code check for a - Andre Guibert de Bruet pointed out a missing return code check for a
strdup() that could lead to segfault if it returned NULL. I extended his strdup() that could lead to segfault if it returned NULL. I extended his

21
lib/http.c
View File

@ -2050,7 +2050,7 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
struct HTTP *http; struct HTTP *http;
const char *ppath = data->state.path; const char *ppath = data->state.path;
bool paste_ftp_userpwd = FALSE; bool paste_ftp_userpwd = FALSE;
char ftp_typecode[sizeof(";type=?")] = ""; char ftp_typecode[sizeof("/;type=?")] = "";
const char *host = conn->host.name; const char *host = conn->host.name;
const char *te = ""; /* transfer-encoding */ const char *te = ""; /* transfer-encoding */
const char *ptr; const char *ptr;
@ -2292,21 +2292,28 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
if(checkprefix("ftp://", ppath)) { if(checkprefix("ftp://", ppath)) {
if (data->set.proxy_transfer_mode) { if (data->set.proxy_transfer_mode) {
/* when doing ftp, append ;type=<a|i> if not present */ /* when doing ftp, append ;type=<a|i> if not present */
char *p = strstr(ppath, ";type="); char *type = strstr(ppath, ";type=");
if(p && p[6] && p[7] == 0) { if(type && type[6] && type[7] == 0) {
switch (Curl_raw_toupper(p[6])) { switch (Curl_raw_toupper(type[6])) {
case 'A': case 'A':
case 'D': case 'D':
case 'I': case 'I':
break; break;
default: default:
p = NULL; type = NULL;
} }
} }
if(!p) if(!type) {
snprintf(ftp_typecode, sizeof(ftp_typecode), ";type=%c", char *p = ftp_typecode;
/* avoid sending invalid URLs like ftp://example.com;type=i if the
* user specified ftp://example.com without the slash */
if (!*data->state.path && ppath[strlen(ppath) - 1] != '/') {
*p++ = '/';
}
snprintf(p, sizeof(ftp_typecode) - 1, ";type=%c",
data->set.prefer_ascii ? 'a' : 'i'); data->set.prefer_ascii ? 'a' : 'i');
} }
}
if (conn->bits.user_passwd && !conn->bits.userpwd_in_url) if (conn->bits.user_passwd && !conn->bits.userpwd_in_url)
paste_ftp_userpwd = TRUE; paste_ftp_userpwd = TRUE;
} }