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Code Issues Releases Wiki Activity

sftp: allow quoted commands to use relative paths

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Closes #1900
This commit is contained in:
John DeHelian 2017-12-08 11:31:01 -05:00 committed by Daniel Stenberg
parent 9fb5a943f5
commit a4a56ec93e
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GPG Key ID: 5CC908FDB71E12C2
4 changed files with 34 additions and 19 deletions
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34
lib/curl_path.c
View File

@ -110,21 +110,25 @@ CURLcode Curl_getworkingpath(struct connectdata *conn,
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
CURLcode Curl_get_pathname(const char **cpp, char **path)
CURLcode Curl_get_pathname(const char **cpp, char **path, char *homedir)
{
const char *cp = *cpp, *end;
char quot;
unsigned int i, j;
size_t fullPathLength, pathLength;
bool relativePath = false;
static const char WHITESPACE[] = " \t\r\n";
cp += strspn(cp, WHITESPACE);
if(!*cp) {
*cpp = cp;
*cpp = NULL;
*path = NULL;
return CURLE_QUOTE_ERROR;
}
*path = malloc(strlen(cp) + 1);
/* Ignore leading whitespace */
cp += strspn(cp, WHITESPACE);
/* Allocate enough space for home directory and filename + separator */
fullPathLength = strlen(cp) + strlen(homedir) + 2;
*path = malloc(fullPathLength);
if(*path == NULL)
return CURLE_OUT_OF_MEMORY;
@ -162,14 +166,26 @@ CURLcode Curl_get_pathname(const char **cpp, char **path)
*cpp = cp + i + strspn(cp + i, WHITESPACE);
}
else {
/* Read to end of filename */
/* Read to end of filename - either to white space or terminator */
end = strpbrk(cp, WHITESPACE);
if(end == NULL)
end = strchr(cp, '\0');
/* return pointer to second parameter if it exists */
*cpp = end + strspn(end, WHITESPACE);
memcpy(*path, cp, end - cp);
(*path)[end - cp] = '\0';
pathLength = 0;
relativePath = (cp[0] == '/' && cp[1] == '~' && cp[2] == '/');
/* Handling for relative path - prepend home directory */
if(relativePath) {
strcpy(*path, homedir);
pathLength = strlen(homedir);
(*path)[pathLength++] = '/';
(*path)[pathLength] = '\0';
cp += 3;
}
/* Copy path name up until first "white space" */
memcpy(&(*path)[pathLength], cp, (int)(end - cp));
pathLength += (int)(end - cp);
(*path)[pathLength] = '\0';
}
return CURLE_OK;

3
lib/curl_path.h
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@ -41,5 +41,4 @@ CURLcode Curl_getworkingpath(struct connectdata *conn,
char *homedir,
char **path);
CURLcode
Curl_get_pathname(const char **cpp, char **path);
CURLcode Curl_get_pathname(const char **cpp, char **path, char *homedir);

8
lib/ssh-libssh.c
View File

@ -2534,7 +2534,7 @@ static void sftp_quote(struct connectdata *conn)
* also, every command takes at least one argument so we get that
* first argument right now
*/
result = Curl_get_pathname(&cp, &sshc->quote_path1);
result = Curl_get_pathname(&cp, &sshc->quote_path1, sshc->homedir);
if(result) {
if(result == CURLE_OUT_OF_MEMORY)
failf(data, "Out of memory");
@ -2559,7 +2559,7 @@ static void sftp_quote(struct connectdata *conn)
/* sshc->quote_path1 contains the mode to set */
/* get the destination */
result = Curl_get_pathname(&cp, &sshc->quote_path2);
result = Curl_get_pathname(&cp, &sshc->quote_path2, sshc->homedir);
if(result) {
if(result == CURLE_OUT_OF_MEMORY)
failf(data, "Out of memory");
@ -2581,7 +2581,7 @@ static void sftp_quote(struct connectdata *conn)
/* symbolic linking */
/* sshc->quote_path1 is the source */
/* get the destination */
result = Curl_get_pathname(&cp, &sshc->quote_path2);
result = Curl_get_pathname(&cp, &sshc->quote_path2, sshc->homedir);
if(result) {
if(result == CURLE_OUT_OF_MEMORY)
failf(data, "Out of memory");
@ -2605,7 +2605,7 @@ static void sftp_quote(struct connectdata *conn)
/* rename file */
/* first param is the source path */
/* second param is the dest. path */
result = Curl_get_pathname(&cp, &sshc->quote_path2);
result = Curl_get_pathname(&cp, &sshc->quote_path2, sshc->homedir);
if(result) {
if(result == CURLE_OUT_OF_MEMORY)
failf(data, "Out of memory");

8
lib/ssh.c
View File

@ -1205,7 +1205,7 @@ static CURLcode ssh_statemach_act(struct connectdata *conn, bool *block)
* also, every command takes at least one argument so we get that
* first argument right now
*/
result = Curl_get_pathname(&cp, &sshc->quote_path1);
result = Curl_get_pathname(&cp, &sshc->quote_path1, sshc->homedir);
if(result) {
if(result == CURLE_OUT_OF_MEMORY)
failf(data, "Out of memory");
@ -1230,7 +1230,7 @@ static CURLcode ssh_statemach_act(struct connectdata *conn, bool *block)
/* sshc->quote_path1 contains the mode to set */
/* get the destination */
result = Curl_get_pathname(&cp, &sshc->quote_path2);
result = Curl_get_pathname(&cp, &sshc->quote_path2, sshc->homedir);
if(result) {
if(result == CURLE_OUT_OF_MEMORY)
failf(data, "Out of memory");
@ -1252,7 +1252,7 @@ static CURLcode ssh_statemach_act(struct connectdata *conn, bool *block)
/* symbolic linking */
/* sshc->quote_path1 is the source */
/* get the destination */
result = Curl_get_pathname(&cp, &sshc->quote_path2);
result = Curl_get_pathname(&cp, &sshc->quote_path2, sshc->homedir);
if(result) {
if(result == CURLE_OUT_OF_MEMORY)
failf(data, "Out of memory");
@ -1277,7 +1277,7 @@ static CURLcode ssh_statemach_act(struct connectdata *conn, bool *block)
/* rename file */
/* first param is the source path */
/* second param is the dest. path */
result = Curl_get_pathname(&cp, &sshc->quote_path2);
result = Curl_get_pathname(&cp, &sshc->quote_path2, sshc->homedir);
if(result) {
if(result == CURLE_OUT_OF_MEMORY)
failf(data, "Out of memory");