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authorJeremy Allison <jra@samba.org>2010-01-15 17:22:35 -0800
committerJeremy Allison <jra@samba.org>2010-01-15 17:22:35 -0800
commit2d41b1ab78639abe4ae030ff482573f464564dd7 (patch)
tree8ef39743081f20d0b838d4a92b40531088782a2b /source3
parenta56ede9027125aa9e70358661b2db1e9f993e939 (diff)
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Fix bug 7045 - Bad (non memory copying) interfaces in smbc_setXXXX calls.
In smbc_free_context libsmbclient just called free() on the string options so it assumes the callers have malloced them before setting them via smbc_set calls. Change to corretly malloc/free string options to the library. Jeremy
Diffstat (limited to 'source3')
-rw-r--r--source3/libsmb/libsmb_context.c26
-rw-r--r--source3/libsmb/libsmb_setget.c9
2 files changed, 25 insertions, 10 deletions
diff --git a/source3/libsmb/libsmb_context.c b/source3/libsmb/libsmb_context.c
index 78c9a551a6..336172ce6f 100644
--- a/source3/libsmb/libsmb_context.c
+++ b/source3/libsmb/libsmb_context.c
@@ -291,13 +291,8 @@ smbc_free_context(SMBCCTX *context,
}
/* Things we have to clean up */
- free(smbc_getWorkgroup(context));
smbc_setWorkgroup(context, NULL);
-
- free(smbc_getNetbiosName(context));
smbc_setNetbiosName(context, NULL);
-
- free(smbc_getUser(context));
smbc_setUser(context, NULL);
DEBUG(3, ("Context %p successfully freed\n", context));
@@ -533,7 +528,6 @@ SMBCCTX *
smbc_init_context(SMBCCTX *context)
{
int pid;
- char *user = NULL;
if (!context) {
errno = EBADF;
@@ -569,7 +563,7 @@ smbc_init_context(SMBCCTX *context)
/*
* FIXME: Is this the best way to get the user info?
*/
- user = getenv("USER");
+ char *user = getenv("USER");
/* walk around as "guest" if no username can be found */
if (!user) {
user = SMB_STRDUP("guest");
@@ -583,6 +577,12 @@ smbc_init_context(SMBCCTX *context)
}
smbc_setUser(context, user);
+ SAFE_FREE(user);
+
+ if (!smbc_getUser(context)) {
+ errno = ENOMEM;
+ return NULL;
+ }
}
if (!smbc_getNetbiosName(context)) {
@@ -615,6 +615,12 @@ smbc_init_context(SMBCCTX *context)
}
smbc_setNetbiosName(context, netbios_name);
+ SAFE_FREE(netbios_name);
+
+ if (!smbc_getNetbiosName(context)) {
+ errno = ENOMEM;
+ return NULL;
+ }
}
DEBUG(1, ("Using netbios name %s.\n", smbc_getNetbiosName(context)));
@@ -636,6 +642,12 @@ smbc_init_context(SMBCCTX *context)
}
smbc_setWorkgroup(context, workgroup);
+ SAFE_FREE(workgroup);
+
+ if (!smbc_getWorkgroup(context)) {
+ errno = ENOMEM;
+ return NULL;
+ }
}
DEBUG(1, ("Using workgroup %s.\n", smbc_getWorkgroup(context)));
diff --git a/source3/libsmb/libsmb_setget.c b/source3/libsmb/libsmb_setget.c
index fc3f321497..3ef707863f 100644
--- a/source3/libsmb/libsmb_setget.c
+++ b/source3/libsmb/libsmb_setget.c
@@ -39,7 +39,8 @@ smbc_getNetbiosName(SMBCCTX *c)
void
smbc_setNetbiosName(SMBCCTX *c, char * netbios_name)
{
- c->netbios_name = netbios_name;
+ SAFE_FREE(c->netbios_name);
+ c->netbios_name = SMB_STRDUP(netbios_name);
}
/** Get the workgroup used for making connections */
@@ -53,7 +54,8 @@ smbc_getWorkgroup(SMBCCTX *c)
void
smbc_setWorkgroup(SMBCCTX *c, char * workgroup)
{
- c->workgroup = workgroup;
+ SAFE_FREE(c->workgroup);
+ c->workgroup = SMB_STRDUP(workgroup);
}
/** Get the username used for making connections */
@@ -67,7 +69,8 @@ smbc_getUser(SMBCCTX *c)
void
smbc_setUser(SMBCCTX *c, char * user)
{
- c->user = user;
+ SAFE_FREE(c->user);
+ c->user = SMB_STRDUP(user);
}
/** Get the debug level */