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-rw-r--r--src/decode.c26
-rw-r--r--src/inputStream_http.c10
-rw-r--r--src/ls.c6
-rw-r--r--src/metadataChunk.c11
-rw-r--r--src/path.c61
-rw-r--r--src/path.h8
-rw-r--r--src/player.c10
-rw-r--r--src/tag.c5
8 files changed, 77 insertions, 60 deletions
diff --git a/src/decode.c b/src/decode.c
index 8eacddb07..144edd70f 100644
--- a/src/decode.c
+++ b/src/decode.c
@@ -112,9 +112,7 @@ static int calculateCrossFadeChunks(PlayerControl * pc, AudioFormat * af)
{ \
decodeWaitedOn = 0; \
if(openAudioDevice(&(cb->audioFormat))<0) { \
- strncpy(pc->erroredUrl, pc->utf8url, \
- MAXPATHLEN); \
- pc->erroredUrl[MAXPATHLEN] = '\0'; \
+ pathcpy_trunc(pc->erroredUrl, pc->utf8url); \
pc->error = PLAYER_ERROR_AUDIO; \
ERROR("problems opening audio device while playing \"%s\"\n", pc->utf8url); \
quitDecode(pc,dc); \
@@ -129,8 +127,7 @@ static int calculateCrossFadeChunks(PlayerControl * pc, AudioFormat * af)
cb->audioFormat.sampleRate; \
} \
else if(dc->state!=DECODE_STATE_START || decode_pid <= 0) { \
- strncpy(pc->erroredUrl, pc->utf8url, MAXPATHLEN); \
- pc->erroredUrl[MAXPATHLEN] = '\0'; \
+ pathcpy_trunc(pc->erroredUrl, pc->utf8url); \
pc->error = PLAYER_ERROR_FILE; \
quitDecode(pc,dc); \
return; \
@@ -145,15 +142,13 @@ static int waitOnDecode(PlayerControl * pc, DecoderControl * dc,
OutputBuffer * cb, int *decodeWaitedOn)
{
MpdTag *tag = NULL;
- strncpy(pc->currentUrl, pc->utf8url, MAXPATHLEN);
- pc->currentUrl[MAXPATHLEN] = '\0';
+ pathcpy_trunc(pc->currentUrl, pc->utf8url);
while (decode_pid > 0 && dc->start)
my_usleep(10000);
if (dc->start || dc->error != DECODE_ERROR_NOERROR) {
- strncpy(pc->erroredUrl, pc->utf8url, MAXPATHLEN);
- pc->erroredUrl[MAXPATHLEN] = '\0';
+ pathcpy_trunc(pc->erroredUrl, pc->utf8url);
pc->error = PLAYER_ERROR_FILE;
quitDecode(pc, dc);
return -1;
@@ -229,9 +224,7 @@ static int decodeSeek(PlayerControl * pc, DecoderControl * dc,
if(pause) pc->state = PLAYER_STATE_PAUSE; \
else { \
if(openAudioDevice(NULL)<0) { \
- strncpy(pc->erroredUrl, pc->utf8url, \
- MAXPATHLEN); \
- pc->erroredUrl[MAXPATHLEN] = '\0'; \
+ pathcpy_trunc(pc->erroredUrl, pc->utf8url); \
pc->error = PLAYER_ERROR_AUDIO; \
ERROR("problems opening audio device while playing \"%s\"\n", pc->utf8url); \
quitDecode(pc,dc); \
@@ -286,8 +279,7 @@ static void decodeStart(PlayerControl * pc, OutputBuffer * cb,
copyMpdTagToOutputBuffer(cb, NULL);
- strncpy(dc->utf8url, pc->utf8url, MAXPATHLEN);
- dc->utf8url[MAXPATHLEN] = '\0';
+ pathcpy_trunc(dc->utf8url, pc->utf8url);
if (openInputStream(&inStream, path) < 0) {
dc->error = DECODE_ERROR_FILE;
@@ -396,8 +388,7 @@ static void decodeStart(PlayerControl * pc, OutputBuffer * cb,
}
if (ret < 0 || ret == DECODE_ERROR_UNKTYPE) {
- strncpy(pc->erroredUrl, dc->utf8url, MAXPATHLEN);
- pc->erroredUrl[MAXPATHLEN] = '\0';
+ pathcpy_trunc(pc->erroredUrl, dc->utf8url);
if (ret != DECODE_ERROR_UNKTYPE)
dc->error = DECODE_ERROR_FILE;
else {
@@ -439,8 +430,7 @@ static int decoderInit(PlayerControl * pc, OutputBuffer * cb,
/* END OF CHILD */
} else if (decode_pid < 0) {
unblockSignals();
- strncpy(pc->erroredUrl, pc->utf8url, MAXPATHLEN);
- pc->erroredUrl[MAXPATHLEN] = '\0';
+ pathcpy_trunc(pc->erroredUrl, pc->utf8url);
pc->error = PLAYER_ERROR_SYSTEM;
return -1;
}
diff --git a/src/inputStream_http.c b/src/inputStream_http.c
index b4b6d04f2..969d2a0ea 100644
--- a/src/inputStream_http.c
+++ b/src/inputStream_http.c
@@ -306,15 +306,15 @@ static int parseUrl(InputStreamHTTPData * data, char *url)
if (colon && colon < at) {
user = malloc(colon - temp + 1);
- strncpy(user, temp, colon - temp);
+ memcpy(user, temp, colon - temp);
user[colon - temp] = '\0';
passwd = malloc(at - colon);
- strncpy(passwd, colon + 1, at - colon - 1);
+ memcpy(passwd, colon + 1, at - colon - 1);
passwd[at - colon - 1] = '\0';
} else {
user = malloc(at - temp + 1);
- strncpy(user, temp, at - temp);
+ memcpy(user, temp, at - temp);
user[at - temp] = '\0';
passwd = strdup("");
@@ -346,7 +346,7 @@ static int parseUrl(InputStreamHTTPData * data, char *url)
return -1;
data->host = malloc(len);
- strncpy(data->host, temp, len - 1);
+ memcpy(data->host, temp, len - 1);
data->host[len - 1] = '\0';
/* fetch the port */
if (colon && (!slash || slash != colon + 1)) {
@@ -354,7 +354,7 @@ static int parseUrl(InputStreamHTTPData * data, char *url)
if (slash)
len -= strlen(slash);
data->port = malloc(len + 1);
- strncpy(data->port, colon + 1, len);
+ memcpy(data->port, colon + 1, len);
data->port[len] = '\0';
DEBUG(__FILE__ ": Port: %s\n", data->port);
} else {
diff --git a/src/ls.c b/src/ls.c
index 5cda6605e..376ebb058 100644
--- a/src/ls.c
+++ b/src/ls.c
@@ -128,12 +128,14 @@ int lsPlaylists(int fd, char *utf8path)
strcat(s, "/");
while ((ent = readdir(dir))) {
+ size_t len = strlen(ent->d_name) + 1;
dup = ent->d_name;
- if (dup[0] != '.' &&
+ if (mpd_likely(len <= maxlen) &&
+ dup[0] != '.' &&
(suff = strlen(dup) - suflen) > 0 &&
dup[suff] == '.' &&
strcmp(dup + suff + 1, PLAYLIST_FILE_SUFFIX) == 0) {
- strncpy(s + actlen, ent->d_name, maxlen);
+ memcpy(s + actlen, ent->d_name, len);
if (stat(s, &st) == 0) {
if (S_ISREG(st.st_mode)) {
if (list == NULL)
diff --git a/src/metadataChunk.c b/src/metadataChunk.c
index 7d57c00af..d11669857 100644
--- a/src/metadataChunk.c
+++ b/src/metadataChunk.c
@@ -17,13 +17,12 @@
*/
#include "metadataChunk.h"
+#include "gcc.h"
#include <string.h>
static void initMetadataChunk(MetadataChunk * chunk)
{
- memset(chunk, 0, sizeof(MetadataChunk));
-
chunk->name = -1;
chunk->artist = -1;
chunk->album = -1;
@@ -54,8 +53,12 @@ MpdTag *metadataChunkToMpdTagDup(MetadataChunk * chunk)
if(element < 0 && string && (slen = strlen(string)) && \
pos < METADATA_BUFFER_LENGTH-1) \
{ \
- strncpy(chunk->buffer+pos, string, \
- METADATA_BUFFER_LENGTH-1-pos); \
+ size_t len = slen; \
+ size_t max = METADATA_BUFFER_LENGTH - 1 - pos; \
+ if (mpd_unlikely(len > max)) \
+ len = max; \
+ memcpy(chunk->buffer+pos, string, len); \
+ *(chunk->buffer+pos+len) = '\0'; \
element = pos; \
pos += slen+1; \
} \
diff --git a/src/path.c b/src/path.c
index 3a6cce23b..69c86391b 100644
--- a/src/path.c
+++ b/src/path.c
@@ -37,10 +37,9 @@
#endif
#endif
-char *musicDir;
-char *playlistDir;
-
-char *fsCharset = NULL;
+const char *musicDir;
+static const char *playlistDir;
+static char *fsCharset = NULL;
static char *pathConvCharset(char *to, char *from, char *str)
{
@@ -205,39 +204,59 @@ void finishPaths(void)
fsCharset = NULL;
}
-char *rmp2amp(char *relativePath)
+static char *pfx_path(const char *path, const char *pfx, const size_t pfx_len)
{
- static char absolutePath[MAXPATHLEN + 1];
-
- memset(absolutePath, 0, MAXPATHLEN + 1);
+ static char ret[MAXPATHLEN+1];
+ size_t rp_len = strlen(path);
+
+ /* check for the likely condition first: */
+ if (mpd_likely((pfx_len + rp_len) < MAXPATHLEN)) {
+ memcpy(ret, pfx, pfx_len);
+ memcpy(ret + pfx_len, path, rp_len + 1);
+ return ret;
+ }
- strncpy(absolutePath, musicDir, MAXPATHLEN);
- strncat(absolutePath, relativePath, MAXPATHLEN - strlen(musicDir));
+ /* unlikely, return an empty string because truncating would
+ * also be wrong... break early and break loudly (the system
+ * headers are likely screwed, not mpd) */
+ ERROR("Cannot prefix '%s' to '%s', max: %d", pfx, path, MAXPATHLEN);
+ ret[0] = '\0';
+ return ret;
+}
- return absolutePath;
+char *rmp2amp(char *relativePath)
+{
+ size_t pfx_len = strlen(musicDir);
+ return pfx_path(relativePath, musicDir, pfx_len);
}
char *rpp2app(char *relativePath)
{
- static char absolutePath[MAXPATHLEN + 1];
-
- memset(absolutePath, 0, MAXPATHLEN + 1);
+ size_t pfx_len = strlen(playlistDir);
+ return pfx_path(relativePath, playlistDir, pfx_len);
+}
- strncpy(absolutePath, playlistDir, MAXPATHLEN);
- strncat(absolutePath, relativePath, MAXPATHLEN - strlen(musicDir));
+/* this is actually like strlcpy (OpenBSD), but we don't actually want to
+ * blindly use it everywhere, only for paths that are OK to truncate (for
+ * error reporting and such */
+void pathcpy_trunc(char *dest, const char *src)
+{
+ size_t len = strlen(src);
- return absolutePath;
+ if (mpd_unlikely(len > MAXPATHLEN))
+ len = MAXPATHLEN;
+ memcpy(dest, src, len);
+ dest[len] = '\0';
}
char *parentPath(char *path)
{
- static char parentPath[MAXPATHLEN + 1];
+ static char parentPath[MAXPATHLEN+1];
char *c;
- memset(parentPath, 0, MAXPATHLEN + 1);
- strncpy(parentPath, path, MAXPATHLEN);
+ pathcpy_trunc(parentPath, path);
+ c = strrchr(parentPath,'/');
- c = strrchr(parentPath, '/');
if (c == NULL)
parentPath[0] = '\0';
else {
diff --git a/src/path.h b/src/path.h
index 2e8cce241..222e145a5 100644
--- a/src/path.h
+++ b/src/path.h
@@ -23,7 +23,7 @@
#include <sys/param.h>
-extern char *musicDir;
+extern const char *musicDir;
void initPaths();
@@ -51,4 +51,10 @@ char *parentPath(char *path);
/* strips extra "///" and leading "/" and trailing "/" */
char *sanitizePathDup(char *path);
+/* this is actually like strlcpy (OpenBSD), but we don't actually want to
+ * blindly use it everywhere, only for paths that are OK to truncate (for
+ * error reporting and such.
+ * dest must be MAXPATHLEN+1 bytes large (which is standard in mpd) */
+void pathcpy_trunc(char *dest, const char *src);
+
#endif
diff --git a/src/player.c b/src/player.c
index 2ffe66e76..c7ea14a86 100644
--- a/src/player.c
+++ b/src/player.c
@@ -17,6 +17,7 @@
*/
#include "player.h"
+#include "path.h"
#include "decode.h"
#include "command.h"
#include "interface.h"
@@ -170,8 +171,7 @@ int playerPlay(int fd, Song * song)
copyMpdTagToMetadataChunk(song->tag, &(pc->fileMetadataChunk));
- strncpy(pc->utf8url, getSongUrl(song), MAXPATHLEN);
- pc->utf8url[MAXPATHLEN] = '\0';
+ pathcpy_trunc(pc->utf8url, getSongUrl(song));
pc->play = 1;
if (getPlayerPid() == 0 && playerInit() < 0) {
@@ -337,8 +337,7 @@ int queueSong(Song * song)
PlayerControl *pc = &(getPlayerData()->playerControl);
if (pc->queueState == PLAYER_QUEUE_BLANK) {
- strncpy(pc->utf8url, getSongUrl(song), MAXPATHLEN);
- pc->utf8url[MAXPATHLEN] = '\0';
+ pathcpy_trunc(pc->utf8url, getSongUrl(song));
if (song->tag)
pc->fileTime = song->tag->time;
@@ -408,8 +407,7 @@ int playerSeek(int fd, Song * song, float time)
copyMpdTagToMetadataChunk(song->tag, &(pc->fileMetadataChunk));
- strncpy(pc->utf8url, getSongUrl(song), MAXPATHLEN);
- pc->utf8url[MAXPATHLEN] = '\0';
+ pathcpy_trunc(pc->utf8url, getSongUrl(song));
}
if (pc->error == PLAYER_ERROR_NOERROR) {
diff --git a/src/tag.c b/src/tag.c
index ae0c3c87c..8a6846d94 100644
--- a/src/tag.c
+++ b/src/tag.c
@@ -612,10 +612,9 @@ int mpdTagsAreEqual(MpdTag * tag1, MpdTag * tag2)
static void appendToTagItems(MpdTag * tag, int type, char *value, int len)
{
int i = tag->numOfItems;
+ char *dup = malloc(len + 1);
- char *dup;
- dup = malloc(len + 1);
- strncpy(dup, value, len);
+ memcpy(dup, value, len);
dup[len] = '\0';
fixUtf8(dup);
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-03 11:26:39 +0000