decoder/gme,input/curl,...: use static buffers instead of g_strdup_printf()

src/decoder/FfmpegDecoderPlugin.cxx

@@ -31,8 +31,6 @@
 #include "util/Domain.hxx"
 #include "LogV.hxx"
 
-#include <glib.h>
-
 #include <assert.h>
 #include <stdio.h>
 #include <unistd.h>
@@ -84,10 +82,11 @@ mpd_ffmpeg_log_callback(gcc_unused void *ptr, int level,
 		cls = *(const AVClass *const*)ptr;
 
 	if (cls != NULL) {
-		char *domain = g_strconcat(ffmpeg_domain.GetName(), "/", cls->item_name(ptr), NULL);
+		char domain[64];
+		snprintf(domain, sizeof(domain), "%s/%s",
+			 ffmpeg_domain.GetName(), cls->item_name(ptr));
 		const Domain d(domain);
 		LogFormatV(d, import_ffmpeg_level(level), fmt, vl);
-		g_free(domain);
 	}
 }
 
@@ -351,12 +350,10 @@ ffmpeg_probe(struct decoder *decoder, struct input_stream *is)
 
 	Error error;
 
-	unsigned char *buffer = (unsigned char *)g_malloc(BUFFER_SIZE);
+	unsigned char buffer[BUFFER_SIZE];
 	size_t nbytes = decoder_read(decoder, is, buffer, BUFFER_SIZE);
-	if (nbytes <= PADDING || !is->LockSeek(0, SEEK_SET, error)) {
-		g_free(buffer);
-		return NULL;
-	}
+	if (nbytes <= PADDING || !is->LockSeek(0, SEEK_SET, error))
+		return nullptr;
 
 	/* some ffmpeg parsers (e.g. ac3_parser.c) read a few bytes
 	   beyond the declared buffer limit, which makes valgrind
@@ -369,10 +366,7 @@ ffmpeg_probe(struct decoder *decoder, struct input_stream *is)
 	avpd.buf_size = nbytes;
 	avpd.filename = is->uri.c_str();
 
-	AVInputFormat *format = av_probe_input_format(&avpd, true);
-	g_free(buffer);
-
-	return format;
+	return av_probe_input_format(&avpd, true);
 }
 
 static void

src/decoder/GmeDecoderPlugin.cxx

@@ -53,10 +53,12 @@ get_container_name(const char *path_fs)
 {
 	const char *subtune_suffix = uri_get_suffix(path_fs);
 	char *path_container = g_strdup(path_fs);
-	char *pat = g_strconcat("*/" SUBTUNE_PREFIX "???.",
-				subtune_suffix, nullptr);
+
+	char pat[64];
+	snprintf(pat, sizeof(pat), "%s%s",
+		 "*/" SUBTUNE_PREFIX "???.",
+		 subtune_suffix);
 	GPatternSpec *path_with_subtune = g_pattern_spec_new(pat);
-	g_free(pat);
 	if (!g_pattern_match(path_with_subtune,
 			     strlen(path_container), path_container, nullptr)) {
 		g_pattern_spec_free(path_with_subtune);
@@ -79,10 +81,12 @@ static int
 get_song_num(const char *path_fs)
 {
 	const char *subtune_suffix = uri_get_suffix(path_fs);
-	char *pat = g_strconcat("*/" SUBTUNE_PREFIX "???.",
-				subtune_suffix, nullptr);
+
+	char pat[64];
+	snprintf(pat, sizeof(pat), "%s%s",
+		 "*/" SUBTUNE_PREFIX "???.",
+		 subtune_suffix);
 	GPatternSpec *path_with_subtune = g_pattern_spec_new(pat);
-	g_free(pat);
 
 	if (g_pattern_match(path_with_subtune,
 			    strlen(path_fs), path_fs, nullptr)) {
@@ -235,13 +239,13 @@ gme_scan_file(const char *path_fs,
 	if (ti->song != nullptr) {
 		if (gme_track_count(emu) > 1) {
 			/* start numbering subtunes from 1 */
-			char *tag_title =
-				g_strdup_printf("%s (%d/%d)",
-						ti->song, song_num + 1,
-						gme_track_count(emu));
+			char tag_title[1024];
+			snprintf(tag_title, sizeof(tag_title),
+				 "%s (%d/%d)",
+				 ti->song, song_num + 1,
+				 gme_track_count(emu));
 			tag_handler_invoke_tag(handler, handler_ctx,
 					       TAG_TITLE, tag_title);
-			g_free(tag_title);
 		} else
 			tag_handler_invoke_tag(handler, handler_ctx,
 					       TAG_TITLE, ti->song);

src/decoder/sidplay_decoder_plugin.cxx

@@ -359,11 +359,12 @@ sidplay_scan_file(const char *path_fs,
 		title="";
 
 	if(info.songs>1) {
-		char *tag_title=g_strdup_printf("%s (%d/%d)",
-			title, song_num, info.songs);
+		char tag_title[1024];
+		snprintf(tag_title, sizeof(tag_title),
+			 "%s (%d/%d)",
+			 title, song_num, info.songs);
 		tag_handler_invoke_tag(handler, handler_ctx,
 				       TAG_TITLE, tag_title);
-		g_free(tag_title);
 	} else
 		tag_handler_invoke_tag(handler, handler_ctx, TAG_TITLE, title);
 
@@ -373,9 +374,9 @@ sidplay_scan_file(const char *path_fs,
 				       info.infoString[1]);
 
 	/* track */
-	char *track=g_strdup_printf("%d", song_num);
+	char track[16];
+	sprintf(track, "%d", song_num);
 	tag_handler_invoke_tag(handler, handler_ctx, TAG_TRACK, track);
-	g_free(track);
 
 	/* time */
 	int song_len=get_song_length(path_fs);

src/input/CurlInputPlugin.cxx

@@ -134,7 +134,7 @@ struct input_curl {
 
 	/* some buffers which were passed to libcurl, which we have
 	   too free */
-	char *range;
+	char range[32];
 	struct curl_slist *request_headers;
 
 	/** the curl handles */
@@ -168,7 +168,7 @@ struct input_curl {
 
 	input_curl(const char *url, Mutex &mutex, Cond &cond)
 		:base(input_plugin_curl, url, mutex, cond),
-		 range(nullptr), request_headers(nullptr),
+		 request_headers(nullptr),
 		 paused(false),
 		 meta_name(nullptr),
 		 tag(nullptr) {}
@@ -383,9 +383,6 @@ input_curl_easy_free(struct input_curl *c)
 
 	curl_slist_free_all(c->request_headers);
 	c->request_headers = NULL;
-
-	g_free(c->range);
-	c->range = NULL;
 }
 
 /**
@@ -958,10 +955,11 @@ input_curl_easy_init(struct input_curl *c, Error &error)
 		curl_easy_setopt(c->easy, CURLOPT_PROXYPORT, (long)proxy_port);
 
 	if (proxy_user != NULL && proxy_password != NULL) {
-		char *proxy_auth_str =
-			g_strconcat(proxy_user, ":", proxy_password, NULL);
+		char proxy_auth_str[1024];
+		snprintf(proxy_auth_str, sizeof(proxy_auth_str),
+			 "%s:%s",
+			 proxy_user, proxy_password);
 		curl_easy_setopt(c->easy, CURLOPT_PROXYUSERPWD, proxy_auth_str);
-		g_free(proxy_auth_str);
 	}
 
 	code = curl_easy_setopt(c->easy, CURLOPT_URL, c->base.uri.c_str());
@@ -1062,7 +1060,7 @@ input_curl_seek(struct input_stream *is, InputPlugin::offset_type offset,
 	/* send the "Range" header */
 
 	if (is->offset > 0) {
-		c->range = g_strdup_printf("%lld-", (long long)is->offset);
+		sprintf(c->range, "%lld-", (long long)is->offset);
 		curl_easy_setopt(c->easy, CURLOPT_RANGE, c->range);
 	}
 

src/playlist/PlsPlaylistPlugin.cxx

@@ -37,7 +37,6 @@ static constexpr Domain pls_domain("pls");
 static void
 pls_parser(GKeyFile *keyfile, std::forward_list<SongPointer> &songs)
 {
-	gchar *key;
 	gchar *value;
 	int length;
 	GError *error = NULL;
@@ -60,7 +59,9 @@ pls_parser(GKeyFile *keyfile, std::forward_list<SongPointer> &songs)
 
 	while (num_entries > 0) {
 		Song *song;
-		key = g_strdup_printf("File%i", num_entries);
+
+		char key[64];
+		sprintf(key, "File%u", num_entries);
 		value = g_key_file_get_string(keyfile, "playlist", key,
 					      &error);
 		if(error) {
@@ -70,15 +71,13 @@ pls_parser(GKeyFile *keyfile, std::forward_list<SongPointer> &songs)
 			g_free(key);
 			return;
 		}
-		g_free(key);
 
 		song = Song::NewRemote(value);
 		g_free(value);
 
-		key = g_strdup_printf("Title%i", num_entries);
+		sprintf(key, "Title%u", num_entries);
 		value = g_key_file_get_string(keyfile, "playlist", key,
 					      &error);
-		g_free(key);
 		if(error == NULL && value){
 			if (song->tag == NULL)
 				song->tag = new Tag();
@@ -89,10 +88,9 @@ pls_parser(GKeyFile *keyfile, std::forward_list<SongPointer> &songs)
 		error = NULL;
 		g_free(value);
 
-		key = g_strdup_printf("Length%i", num_entries);
+		sprintf(key, "Length%u", num_entries);
 		length = g_key_file_get_integer(keyfile, "playlist", key,
 						&error);
-		g_free(key);
 		if(error == NULL && length > 0){
 			if (song->tag == NULL)
 				song->tag = new Tag();