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sftp: Harden sftp_extension_supported() against null pointers.

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This commit is contained in:
Andreas Schneider
2012-10-05 10:37:53 +02:00
parent b5c4b090da
commit 22f607649d
1 changed files with 10 additions and 2 deletions
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12
src/sftp.c
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@@ -622,10 +622,18 @@ int sftp_extension_supported(sftp_session sftp, const char *name,
const char *data) {
int i, n;
if (sftp == NULL || name == NULL || data == NULL) {
return 0;
}
n = sftp_extensions_get_count(sftp);
for (i = 0; i < n; i++) {
if (strcmp(sftp_extensions_get_name(sftp, i), name) == 0 &&
strcmp(sftp_extensions_get_data(sftp, i), data) == 0) {
const char *ext_name = sftp_extensions_get_name(sftp, i);
const char *ext_data = sftp_extensions_get_data(sftp, i);
if (ext_name != NULL && ext_data != NULL &&
strcmp(ext_name, name) == 0 &&
strcmp(ext_data, data) == 0) {
return 1;
}
}