Don't use memcpy when source and dest. buffers may overlap

[git.git] / imap-send.c

diff --git a/imap-send.c b/imap-send.c
index 52e2400b57118e7f9a27c85212e1c539d16add7c..a6a65680ee6daf062180d2580e83616cfff4cda4 100644 (file)
--- a/imap-send.c
+++ b/imap-send.c
@@ -93,7 +93,7 @@ typedef struct {
        char *data;
        int len;
        unsigned char flags;
-       unsigned char crlf:1;
+       unsigned int crlf:1;
 } msg_data_t;
 
 #define DRV_OK          0
@@ -110,7 +110,6 @@ static char *next_arg( char ** );
 
 static void free_generic_messages( message_t * );
 
-static int nfvasprintf( char **str, const char *fmt, va_list va );
 static int nfsnprintf( char *buf, int blen, const char *fmt, ... );
 
 
@@ -242,7 +241,7 @@ socket_read( Socket_t *sock, char *buf, int len )
 }
 
 static int
-socket_write( Socket_t *sock, char *buf, int len )
+socket_write( Socket_t *sock, const char *buf, int len )
 {
        int n = write( sock->fd, buf, len );
        if (n != len) {
@@ -273,7 +272,7 @@ buffer_gets( buffer_t * b, char **s )
                                n = b->bytes - start;
 
                                if (n)
-                                       memcpy( b->buf, b->buf + start, n );
+                                       memmove(b->buf, b->buf + start, n);
                                b->offset -= start;
                                b->bytes = n;
                                start = 0;
@@ -371,21 +370,6 @@ free_generic_messages( message_t *msgs )
        }
 }
 
-static int
-git_vasprintf( char **strp, const char *fmt, va_list ap )
-{
-       int len;
-       char tmp[1024];
-
-       if ((len = vsnprintf( tmp, sizeof(tmp), fmt, ap )) < 0 || !(*strp = xmalloc( len + 1 )))
-               return -1;
-       if (len >= (int)sizeof(tmp))
-               vsprintf( *strp, fmt, ap );
-       else
-               memcpy( *strp, tmp, len + 1 );
-       return len;
-}
-
 static int
 nfsnprintf( char *buf, int blen, const char *fmt, ... )
 {
@@ -399,15 +383,6 @@ nfsnprintf( char *buf, int blen, const char *fmt, ... )
        return ret;
 }
 
-static int
-nfvasprintf( char **str, const char *fmt, va_list va )
-{
-       int ret = git_vasprintf( str, fmt, va );
-       if (ret < 0)
-               die( "Fatal: Out of memory\n");
-       return ret;
-}
-
 static struct {
        unsigned char i, j, s[256];
 } rs;
@@ -924,6 +899,7 @@ imap_open_store( imap_server_conf_t *srvc )
        struct hostent *he;
        struct sockaddr_in addr;
        int s, a[2], preauth;
+       pid_t pid;
 
        ctx = xcalloc( sizeof(*ctx), 1 );
 
@@ -941,7 +917,10 @@ imap_open_store( imap_server_conf_t *srvc )
                        exit( 1 );
                }
 
-               if (fork() == 0) {
+               pid = fork();
+               if (pid < 0)
+                       _exit( 127 );
+               if (!pid) {
                        if (dup2( a[0], 0 ) == -1 || dup2( a[0], 1 ) == -1)
                                _exit( 127 );
                        close( a[0] );
@@ -1028,7 +1007,7 @@ imap_open_store( imap_server_conf_t *srvc )
                         * getpass() returns a pointer to a static buffer.  make a copy
                         * for long term storage.
                         */
-                       srvc->pass = strdup( arg );
+                       srvc->pass = xstrdup( arg );
                }
                if (CAP(NOLOGIN)) {
                        fprintf( stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host );
@@ -1247,6 +1226,14 @@ split_msg( msg_data_t *all_msgs, msg_data_t *msg, int *ofs )
        if (msg->len < 5 || strncmp( data, "From ", 5 ))
                return 0;
 
+       p = strchr( data, '\n' );
+       if (p) {
+               p = &p[1];
+               msg->len -= p-data;
+               *ofs += p-data;
+               data = p;
+       }
+
        p = strstr( data, "\nFrom " );
        if (p)
                msg->len = &p[1] - data;
@@ -1284,7 +1271,7 @@ git_imap_config(const char *key, const char *val)
        key += sizeof imap_key - 1;
 
        if (!strcmp( "folder", key )) {
-               imap_folder = strdup( val );
+               imap_folder = xstrdup( val );
        } else if (!strcmp( "host", key )) {
                {
                        if (!strncmp( "imap:", val, 5 ))
@@ -1294,16 +1281,16 @@ git_imap_config(const char *key, const char *val)
                }
                if (!strncmp( "//", val, 2 ))
                        val += 2;
-               server.host = strdup( val );
+               server.host = xstrdup( val );
        }
        else if (!strcmp( "user", key ))
-               server.user = strdup( val );
+               server.user = xstrdup( val );
        else if (!strcmp( "pass", key ))
-               server.pass = strdup( val );
+               server.pass = xstrdup( val );
        else if (!strcmp( "port", key ))
                server.port = git_config_int( key, val );
        else if (!strcmp( "tunnel", key ))
-               server.tunnel = strdup( val );
+               server.tunnel = xstrdup( val );
        return 0;
 }