lavf/ftp: always treat all response codes >= 500 as error

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>

libavformat/ftp.c

@@ -149,13 +149,17 @@ static int ftp_status(FTPContext *s, char **line, const int response_codes[])
         }
 
         if (!code_found) {
-            for (i = 0; response_codes[i]; ++i) {
-                if (err == response_codes[i]) {
-                    code_found = 1;
-                    result = err;
-                    break;
+            if (err >= 500) {
+                code_found = 1;
+                result = err;
+            } else
+                for (i = 0; response_codes[i]; ++i) {
+                    if (err == response_codes[i]) {
+                        code_found = 1;
+                        result = err;
+                        break;
+                    }
                 }
-            }
         }
         if (code_found) {
             if (line)
@@ -209,8 +213,8 @@ static int ftp_auth(FTPContext *s)
     const char *user = NULL, *pass = NULL;
     char *end = NULL, buf[CONTROL_BUFFER_SIZE], credencials[CREDENTIALS_BUFFER_SIZE];
     int err;
-    static const int user_codes[] = {331, 230, 500, 530, 0}; /* 500, 530 are incorrect codes */
-    static const int pass_codes[] = {230, 503, 530, 0}; /* 503, 530 are incorrect codes */
+    static const int user_codes[] = {331, 230, 0};
+    static const int pass_codes[] = {230, 0};
 
     /* Authentication may be repeated, original string has to be saved */
     av_strlcpy(credencials, s->credencials, sizeof(credencials));
@@ -244,7 +248,7 @@ static int ftp_passive_mode_epsv(FTPContext *s)
     int i;
     static const char d = '|';
     static const char *command = "EPSV\r\n";
-    static const int epsv_codes[] = {229, 500, 501, 0}; /* 500, 501 are incorrect codes */
+    static const int epsv_codes[] = {229, 0};
 
     if (ftp_send_command(s, command, epsv_codes, &res) != 229 || !res)
         goto fail;
@@ -285,7 +289,7 @@ static int ftp_passive_mode(FTPContext *s)
     char *res = NULL, *start = NULL, *end = NULL;
     int i;
     static const char *command = "PASV\r\n";
-    static const int pasv_codes[] = {227, 501, 0}; /* 501 is incorrect code */
+    static const int pasv_codes[] = {227, 0};
 
     if (ftp_send_command(s, command, pasv_codes, &res) != 227 || !res)
         goto fail;
@@ -368,7 +372,7 @@ static int ftp_file_size(FTPContext *s)
 {
     char command[CONTROL_BUFFER_SIZE];
     char *res = NULL;
-    static const int size_codes[] = {213, 501, 550, 0}; /* 501, 550 are incorrect codes */
+    static const int size_codes[] = {213, 0};
 
     snprintf(command, sizeof(command), "SIZE %s\r\n", s->path);
     if (ftp_send_command(s, command, size_codes, &res) == 213 && res) {
@@ -386,7 +390,7 @@ static int ftp_file_size(FTPContext *s)
 static int ftp_retrieve(FTPContext *s)
 {
     char command[CONTROL_BUFFER_SIZE];
-    static const int retr_codes[] = {150, 550, 554, 0}; /* 550, 554 are incorrect codes */
+    static const int retr_codes[] = {150, 0};
 
     snprintf(command, sizeof(command), "RETR %s\r\n", s->path);
     if (ftp_send_command(s, command, retr_codes, NULL) != 150)
@@ -414,7 +418,7 @@ static int ftp_store(FTPContext *s)
 static int ftp_type(FTPContext *s)
 {
     static const char *command = "TYPE I\r\n";
-    static const int type_codes[] = {200, 500, 504, 0}; /* 500, 504 are incorrect codes */
+    static const int type_codes[] = {200, 0};
 
     if (ftp_send_command(s, command, type_codes, NULL) != 200)
         return AVERROR(EIO);
@@ -425,7 +429,7 @@ static int ftp_type(FTPContext *s)
 static int ftp_restart(FTPContext *s, int64_t pos)
 {
     char command[CONTROL_BUFFER_SIZE];
-    static const int rest_codes[] = {350, 500, 501, 0}; /* 500, 501 are incorrect codes */
+    static const int rest_codes[] = {350, 0};
 
     snprintf(command, sizeof(command), "REST %"PRId64"\r\n", pos);
     if (ftp_send_command(s, command, rest_codes, NULL) != 350)
@@ -438,8 +442,8 @@ static int ftp_features(FTPContext *s)
 {
     static const char *feat_command        = "FEAT\r\n";
     static const char *enable_utf8_command = "OPTS UTF8 ON\r\n";
-    static const int feat_codes[] = {211, 500, 502, 0};   /* 500, 502 are incorrect codes */
-    static const int opts_codes[] = {200, 451, 500, 502}; /* 500, 451, 502 are incorrect codes */
+    static const int feat_codes[] = {211, 0};
+    static const int opts_codes[] = {200, 451};
     char *feat;
 
     if (ftp_send_command(s, feat_command, feat_codes, &feat) == 211) {