Remove libdownload support and fix libfetch one.

Aaron said to consider libdownload a dead project so libdownload support was
removed to more easily fix libfetch one (otherwise many ifdef needed).

There was no direct replacement for ferror to detect an error while
downloading. So instead, I added a check at the end to see if the file was
fully downloaded, which is just a small chunk of code taken from here:
http://cvsweb.netbsd.org/bsdweb.cgi/pkgsrc/net/libfetch/files/fetch.c?only_with_tag=MAIN

Signed-off-by: Xavier Chantry <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 16 insertions, 21 deletions

diff --git a/lib/libalpm/dload.c b/lib/libalpm/dload.c
index 06f643f7..5b0a691f 100644
--- a/lib/libalpm/dload.c
+++ b/lib/libalpm/dload.c
@@ -34,15 +34,7 @@
 #include <sys/param.h> /* MAXHOSTNAMELEN */
 #endif
 
-#if defined(HAVE_LIBDOWNLOAD)
-#include <download.h>
-#define fetchFreeURL downloadFreeURL
-#define fetchLastErrCode downloadLastErrCode
-#define fetchLastErrString downloadLastErrString
-#define fetchParseURL downloadParseURL
-#define fetchTimeout downloadTimeout
-#define fetchXGet downloadXGet
-#elif defined(HAVE_LIBFETCH)
+#if defined(INTERNAL_DOWNLOAD)
 #include <fetch.h>
 #endif
 
@@ -109,7 +101,8 @@ static struct url *url_for_string(const char *url)
 
 static int download_internal(const char *url, const char *localpath,
 		time_t mtimeold, time_t *mtimenew) {
-	FILE *dlf, *localf = NULL;
+	fetchIO *dlf = NULL;
+	FILE *localf = NULL;
 	struct url_stat ust;
 	struct stat st;
 	int chk_resume = 0, ret = 0;
@@ -214,16 +207,8 @@ static int download_internal(const char *url, const char *localpath,
 		handle->dlcb(filename, 0, ust.size);
 	}
 
-	while((nread = fread(buffer, 1, PM_DLBUF_LEN, dlf)) > 0) {
+	while((nread = fetchIO_read(dlf, buffer, PM_DLBUF_LEN)) > 0) {
 		size_t nwritten = 0;
-		if(ferror(dlf)) {
-			pm_errno = PM_ERR_LIBFETCH;
-			_alpm_log(PM_LOG_ERROR, _("error downloading '%s': %s\n"),
-					filename, fetchLastErrString);
-			ret = -1;
-			goto cleanup;
-		}
-
 		while(nwritten < nread) {
 			nwritten += fwrite(buffer, 1, (nread - nwritten), localf);
 			if(ferror(localf)) {
@@ -239,12 +224,22 @@ static int download_internal(const char *url, const char *localpath,
 			handle->dlcb(filename, dl_thisfile, ust.size);
 		}
 	}
+
+	/* did the transfer complete normally? */
+	if (ust.size != -1 && dl_thisfile < ust.size) {
+		pm_errno = PM_ERR_LIBFETCH;
+		_alpm_log(PM_LOG_ERROR, _("%s appears to be truncated: %jd/%jd bytes\n"),
+				filename, (intmax_t)dl_thisfile, (intmax_t)ust.size);
+		ret = -1;
+		goto cleanup;
+	}
+
 	/* probably safer to close the file descriptors now before renaming the file,
 	 * for example to make sure the buffers are flushed.
 	 */
 	fclose(localf);
 	localf = NULL;
-	fclose(dlf);
+	fetchIO_close(dlf);
 	dlf = NULL;
 
 	rename(tempfile, destfile);
@@ -260,7 +255,7 @@ cleanup:
 		fclose(localf);
 	}
 	if(dlf != NULL) {
-		fclose(dlf);
+		fetchIO_close(dlf);
 	}
 	fetchFreeURL(fileurl);
 	return(ret);