On Sat, Oct 17, 2009 at 4:54 PM, Laszlo Papp <djszapi2@gmail.com> wrote:
Pacman's fgets function in the API used hardcoded numbers to identify the size. This is not good practice, so replace them with sizeof handling.
Signed-off-by: Laszlo Papp <djszapi@archlinux.us> ---
Doesn't apply to git HEAD... dmcgee@galway ~/projects/pacman (master) $ git am -3 -s < /tmp/pacman-sizeof.patch Applying: Size handling was changed in fgets() functions Using index info to reconstruct a base tree... error: patch failed: lib/libalpm/trans.c:320 error: lib/libalpm/trans.c: patch does not apply error: patch failed: src/pacman/util.c:580 error: src/pacman/util.c: patch does not apply Did you hand edit your patch? It does not apply to blobs recorded in its index. Cannot fall back to three-way merge. Patch failed at 0001 Size handling was changed in fgets() functions When you have resolved this problem run "git am -3 --resolved". If you would prefer to skip this patch, instead run "git am -3 --skip". To restore the original branch and stop patching run "git am -3 --abort".
lib/libalpm/be_files.c | 49 ++++++++++++++++++++++++----------------------- lib/libalpm/trans.c | 3 +- src/pacman/util.c | 3 +- 3 files changed, 29 insertions(+), 26 deletions(-)
diff --git a/lib/libalpm/be_files.c b/lib/libalpm/be_files.c index 53bbda1..ffbaa8d 100644 --- a/lib/libalpm/be_files.c +++ b/lib/libalpm/be_files.c @@ -387,6 +387,7 @@ int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq) FILE *fp = NULL; char path[PATH_MAX]; char line[513]; + int sline = sizeof(line)-1; char *pkgpath = NULL;
ALPM_LOG_FUNC; @@ -418,7 +419,7 @@ int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq) info->name, inforeq);
/* clear out 'line', to be certain - and to make valgrind happy */ - memset(line, 0, 513); + memset(line, 0, sline+1);
pkgpath = get_pkgpath(db, info);
@@ -442,7 +443,7 @@ int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq) } _alpm_strtrim(line); if(strcmp(line, "%NAME%") == 0) { - if(fgets(line, 512, fp) == NULL) { + if(fgets(line, sline, fp) == NULL) { goto error; } if(strcmp(_alpm_strtrim(line), info->name) != 0) { @@ -450,7 +451,7 @@ int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq) "mismatch on package %s\n"), db->treename, info->name); } } else if(strcmp(line, "%VERSION%") == 0) { - if(fgets(line, 512, fp) == NULL) { + if(fgets(line, sline, fp) == NULL) { goto error; } if(strcmp(_alpm_strtrim(line), info->version) != 0) { @@ -458,39 +459,39 @@ int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq) "mismatch on package %s\n"), db->treename, info->name); } } else if(strcmp(line, "%FILENAME%") == 0) { - if(fgets(line, 512, fp) == NULL) { + if(fgets(line, sline, fp) == NULL) { goto error; } STRDUP(info->filename, _alpm_strtrim(line), goto error); } else if(strcmp(line, "%DESC%") == 0) { - if(fgets(line, 512, fp) == NULL) { + if(fgets(line, sline, fp) == NULL) { goto error; } STRDUP(info->desc, _alpm_strtrim(line), goto error); } else if(strcmp(line, "%GROUPS%") == 0) { - while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { + while(fgets(line, sline, fp) && strlen(_alpm_strtrim(line))) { char *linedup; STRDUP(linedup, _alpm_strtrim(line), goto error); info->groups = alpm_list_add(info->groups, linedup); } } else if(strcmp(line, "%URL%") == 0) { - if(fgets(line, 512, fp) == NULL) { + if(fgets(line, sline, fp) == NULL) { goto error; } STRDUP(info->url, _alpm_strtrim(line), goto error); } else if(strcmp(line, "%LICENSE%") == 0) { - while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { + while(fgets(line, sline, fp) && strlen(_alpm_strtrim(line))) { char *linedup; STRDUP(linedup, _alpm_strtrim(line), goto error); info->licenses = alpm_list_add(info->licenses, linedup); } } else if(strcmp(line, "%ARCH%") == 0) { - if(fgets(line, 512, fp) == NULL) { + if(fgets(line, sline, fp) == NULL) { goto error; } STRDUP(info->arch, _alpm_strtrim(line), goto error); } else if(strcmp(line, "%BUILDDATE%") == 0) { - if(fgets(line, 512, fp) == NULL) { + if(fgets(line, sline, fp) == NULL) { goto error; } _alpm_strtrim(line); @@ -506,7 +507,7 @@ int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq) info->builddate = atol(line); } } else if(strcmp(line, "%INSTALLDATE%") == 0) { - if(fgets(line, 512, fp) == NULL) { + if(fgets(line, sline, fp) == NULL) { goto error; } _alpm_strtrim(line); @@ -522,12 +523,12 @@ int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq) info->installdate = atol(line); } } else if(strcmp(line, "%PACKAGER%") == 0) { - if(fgets(line, 512, fp) == NULL) { + if(fgets(line, sline, fp) == NULL) { goto error; } STRDUP(info->packager, _alpm_strtrim(line), goto error); } else if(strcmp(line, "%REASON%") == 0) { - if(fgets(line, 512, fp) == NULL) { + if(fgets(line, sline, fp) == NULL) { goto error; } info->reason = (pmpkgreason_t)atol(_alpm_strtrim(line)); @@ -537,7 +538,7 @@ int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq) * is currently only used in sync databases, and SIZE is * only used in local databases. */ - if(fgets(line, 512, fp) == NULL) { + if(fgets(line, sline, fp) == NULL) { goto error; } info->size = atol(_alpm_strtrim(line)); @@ -548,19 +549,19 @@ int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq) } else if(strcmp(line, "%ISIZE%") == 0) { /* ISIZE (installed size) tag only appears in sync repositories, * not the local one. */ - if(fgets(line, 512, fp) == NULL) { + if(fgets(line, sline, fp) == NULL) { goto error; } info->isize = atol(_alpm_strtrim(line)); } else if(strcmp(line, "%MD5SUM%") == 0) { /* MD5SUM tag only appears in sync repositories, * not the local one. */ - if(fgets(line, 512, fp) == NULL) { + if(fgets(line, sline, fp) == NULL) { goto error; } STRDUP(info->md5sum, _alpm_strtrim(line), goto error); } else if(strcmp(line, "%REPLACES%") == 0) { - while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { + while(fgets(line, sline, fp) && strlen(_alpm_strtrim(line))) { char *linedup; STRDUP(linedup, _alpm_strtrim(line), goto error); info->replaces = alpm_list_add(info->replaces, linedup); @@ -583,13 +584,13 @@ int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq) while(fgets(line, 256, fp)) { _alpm_strtrim(line); if(strcmp(line, "%FILES%") == 0) { - while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { + while(fgets(line, sline, fp) && strlen(_alpm_strtrim(line))) { char *linedup; STRDUP(linedup, _alpm_strtrim(line), goto error); info->files = alpm_list_add(info->files, linedup); } } else if(strcmp(line, "%BACKUP%") == 0) { - while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { + while(fgets(line, sline, fp) && strlen(_alpm_strtrim(line))) { char *linedup; STRDUP(linedup, _alpm_strtrim(line), goto error); info->backup = alpm_list_add(info->backup, linedup); @@ -611,24 +612,24 @@ int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq) fgets(line, 255, fp); _alpm_strtrim(line); if(strcmp(line, "%DEPENDS%") == 0) { - while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { + while(fgets(line, sline, fp) && strlen(_alpm_strtrim(line))) { pmdepend_t *dep = _alpm_splitdep(_alpm_strtrim(line)); info->depends = alpm_list_add(info->depends, dep); } } else if(strcmp(line, "%OPTDEPENDS%") == 0) { - while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { + while(fgets(line, sline, fp) && strlen(_alpm_strtrim(line))) { char *linedup; STRDUP(linedup, _alpm_strtrim(line), goto error); info->optdepends = alpm_list_add(info->optdepends, linedup); } } else if(strcmp(line, "%CONFLICTS%") == 0) { - while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { + while(fgets(line, sline, fp) && strlen(_alpm_strtrim(line))) { char *linedup; STRDUP(linedup, _alpm_strtrim(line), goto error); info->conflicts = alpm_list_add(info->conflicts, linedup); } } else if(strcmp(line, "%PROVIDES%") == 0) { - while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { + while(fgets(line, sline, fp) && strlen(_alpm_strtrim(line))) { char *linedup; STRDUP(linedup, _alpm_strtrim(line), goto error); info->provides = alpm_list_add(info->provides, linedup); @@ -647,7 +648,7 @@ int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq) fgets(line, 255, fp); _alpm_strtrim(line); if(strcmp(line, "%DELTAS%") == 0) { - while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { + while(fgets(line, sline, fp) && strlen(_alpm_strtrim(line))) { pmdelta_t *delta = _alpm_delta_parse(line); if(delta) { info->deltas = alpm_list_add(info->deltas, delta); diff --git a/lib/libalpm/trans.c b/lib/libalpm/trans.c index 65bd464..aea71db 100644 --- a/lib/libalpm/trans.c +++ b/lib/libalpm/trans.c @@ -320,7 +320,8 @@ static int grep(const char *fn, const char *needle) } while(!feof(fp)) { char line[1025]; - fgets(line, 1024, fp); + int sline = sizeof(line)-1; + fgets(line, sline, fp); if(feof(fp)) { continue; } diff --git a/src/pacman/util.c b/src/pacman/util.c index 0e5e7f5..1143bef 100644 --- a/src/pacman/util.c +++ b/src/pacman/util.c @@ -580,6 +580,7 @@ void display_optdepends(pmpkg_t *pkg) static int question(short preset, char *fmt, va_list args) { char response[33]; + int sresponse = sizeof(response)-1; FILE *stream;
if(config->noconfirm) { @@ -602,7 +603,7 @@ static int question(short preset, char *fmt, va_list args) return(preset); }
- if(fgets(response, 32, stdin)) { + if(fgets(response, sresponse, stdin)) { strtrim(response); if(strlen(response) == 0) { return(preset); -- 1.6.4.4