From f3910003bce32ebdc1dbb71fd9ca2d4b8352b563 Mon Sep 17 00:00:00 2001 From: Michal Schmidt Date: Tue, 30 Oct 2012 10:29:40 +0100 Subject: [PATCH] shared, libsystemd-daemon: check for empty strings in strto*l conversions strtol() and friends may set EINVAL if no conversion was performed, but they are not required to do so. In practice they don't. We need to check for it. https://bugzilla.redhat.com/show_bug.cgi?id=870577 --- src/libsystemd-daemon/sd-daemon.c | 4 ++-- src/shared/conf-parser.c | 2 +- src/shared/util.c | 8 ++++---- 3 files changed, 7 insertions(+), 7 deletions(-) diff --git a/src/libsystemd-daemon/sd-daemon.c b/src/libsystemd-daemon/sd-daemon.c index 863ac75..480db3b 100644 --- a/src/libsystemd-daemon/sd-daemon.c +++ b/src/libsystemd-daemon/sd-daemon.c @@ -88,7 +88,7 @@ _sd_export_ int sd_listen_fds(int unset_environment) { goto finish; } - if (!p || *p || l <= 0) { + if (!p || p == e || *p || l <= 0) { r = -EINVAL; goto finish; } @@ -112,7 +112,7 @@ _sd_export_ int sd_listen_fds(int unset_environment) { goto finish; } - if (!p || *p) { + if (!p || p == e || *p) { r = -EINVAL; goto finish; } diff --git a/src/shared/conf-parser.c b/src/shared/conf-parser.c index 4bf3147..9f5c07c 100644 --- a/src/shared/conf-parser.c +++ b/src/shared/conf-parser.c @@ -865,7 +865,7 @@ int config_parse_mode( errno = 0; l = strtol(rvalue, &x, 8); - if (!x || *x || errno) { + if (!x || x == rvalue || *x || errno) { log_error("[%s:%u] Failed to parse mode value, ignoring: %s", filename, line, rvalue); return 0; } diff --git a/src/shared/util.c b/src/shared/util.c index 8ec83e4..23832fe 100644 --- a/src/shared/util.c +++ b/src/shared/util.c @@ -377,7 +377,7 @@ int safe_atou(const char *s, unsigned *ret_u) { errno = 0; l = strtoul(s, &x, 0); - if (!x || *x || errno) + if (!x || x == s || *x || errno) return errno ? -errno : -EINVAL; if ((unsigned long) (unsigned) l != l) @@ -397,7 +397,7 @@ int safe_atoi(const char *s, int *ret_i) { errno = 0; l = strtol(s, &x, 0); - if (!x || *x || errno) + if (!x || x == s || *x || errno) return errno ? -errno : -EINVAL; if ((long) (int) l != l) @@ -417,7 +417,7 @@ int safe_atollu(const char *s, long long unsigned *ret_llu) { errno = 0; l = strtoull(s, &x, 0); - if (!x || *x || errno) + if (!x || x == s || *x || errno) return errno ? -errno : -EINVAL; *ret_llu = l; @@ -434,7 +434,7 @@ int safe_atolli(const char *s, long long int *ret_lli) { errno = 0; l = strtoll(s, &x, 0); - if (!x || *x || errno) + if (!x || x == s || *x || errno) return errno ? -errno : -EINVAL; *ret_lli = l; -- 1.7.10.4