Fixes some of the issues in Travis (#17267)

* Do not check with r_return_ if the convention is present

Let's just assume the NULL default in such a case, so that architectures
for which we don't have a defined calling convention can still be
processed somehow by the analysis code. It won't be precise, but it's
better than nothing.

Also add a warning message so users are aware when the calling
convention is not defined.

* Fix oob-read when # is at the end of the cmd string

* Do not set TMPDIR when the new value is the empty string

When TMPDIR is set to empty value, clang+ld behaves in weird ways and
you cannot compile files from within the r2 shell (e.g. when using #!c
or #!cpipe)

* Use meson and add -lasan to pkgconfig files when sanitizer are used

.travis.yml

@@ -60,7 +60,7 @@ jobs:
     # ASAN as a best effort on every push
     - if: (not head_branch =~ ^release-* AND not head_branch =~ ^prerelease-* AND not branch =~ ^release-* AND not branch =~ ^prerelease-*) AND (head_branch =~ ^asan-* OR type = push)
       os: linux
-      env: COMPILER_NAME=clang CXX=clang++ CC=clang ASAN=1 ASAN_OPTIONS=detect_odr_violation=0 LSAN_OPTIONS=detect_leaks=0 CFLAGS="-DR2_ASSERT_STDOUT=1"
+      env: COMPILER_NAME=gcc INSTALL_SYSTEM=meson ASAN=1 ASAN_OPTIONS=detect_odr_violation=0 LSAN_OPTIONS=detect_leaks=0 CFLAGS="-DR2_ASSERT_STDOUT=1"
     # release-only: meson build with system libraries
     - if: head_branch =~ ^release-* OR head_branch =~ ^prerelease-* OR branch =~ ^release-* OR branch =~ ^prerelease-*
       os: linux
@@ -68,7 +68,7 @@ jobs:
     # release-only: meson build with ASAN and R2_ASSERT_STDOUT
     - if: head_branch =~ ^release-* OR head_branch =~ ^prerelease-* OR branch =~ ^release-* OR branch =~ ^prerelease-*
       os: linux
-      env: COMPILER_NAME=clang CXX=clang++ CC=clang CFLAGS="-DR2_ASSERT_STDOUT=1" ASAN=1 ASAN_OPTIONS=detect_odr_violation=0 LSAN_OPTIONS=detect_leaks=0 RELEASE=1
+      env: COMPILER_NAME=gcc CFLAGS="-DR2_ASSERT_STDOUT=1" INSTALL_SYSTEM=meson ASAN=1 ASAN_OPTIONS=detect_odr_violation=0 LSAN_OPTIONS=detect_leaks=0 RELEASE=1
     # release-only: nogpl plugins file, just test if it builds
     - if: head_branch =~ ^release-* OR head_branch =~ ^prerelease-* OR branch =~ ^release-* OR branch =~ ^prerelease-*
       os: linux

libr/anal/cc.c

@@ -100,10 +100,12 @@ R_API bool r_anal_cc_exist(RAnal *anal, const char *convention) {
 }
 
 R_API const char *r_anal_cc_arg(RAnal *anal, const char *convention, int n) {
-	r_return_val_if_fail (anal && convention, NULL);
-	if (n < 0) {
+	r_return_val_if_fail (anal, NULL);
+	r_return_val_if_fail (n >= 0, NULL);
+	if (!convention) {
 		return NULL;
 	}
+
 	const char *query = sdb_fmt ("cc.%s.arg%d", convention, n);
 	const char *ret = sdb_const_get (DB, query, 0);
 	if (!ret) {

libr/anal/meson.build

@@ -195,6 +195,7 @@ pkgconfig_mod.generate(r_anal,
   version: r2_version,
   name: 'r_anal',
   filebase: 'r_anal',
+  libraries: pkgcfg_sanitize_libs,
   requires: [
     'r_util',
     'r_reg',

libr/asm/meson.build

@@ -240,6 +240,7 @@ pkgconfig_mod.generate(r_asm,
   version: r2_version,
   name: 'r_asm',
   filebase: 'r_asm',
+  libraries: pkgcfg_sanitize_libs,
   requires: [
     'r_util',
     'r_syscall',

libr/bin/meson.build

@@ -165,6 +165,7 @@ pkgconfig_mod.generate(r_bin,
   version: r2_version,
   name: 'r_bin',
   filebase: 'r_bin',
+  libraries: pkgcfg_sanitize_libs,
   requires: pkgconfig_magic_requires + [
     'r_util',
     'r_io',

libr/bp/meson.build

@@ -29,6 +29,7 @@ pkgconfig_mod.generate(r_bp,
   version: r2_version,
   name: 'r_bp',
   filebase: 'r_bp',
+  libraries: pkgcfg_sanitize_libs,
   requires: [
     'r_util'
   ],

libr/config/meson.build

@@ -22,6 +22,7 @@ pkgconfig_mod.generate(r_config,
   version: r2_version,
   name: 'r_config',
   filebase: 'r_config',
+  libraries: pkgcfg_sanitize_libs,
   requires: [
     'r_util'
   ],

libr/cons/meson.build

@@ -38,6 +38,7 @@ pkgconfig_mod.generate(r_cons,
   version: r2_version,
   name: 'r_cons',
   filebase: 'r_cons',
+  libraries: pkgcfg_sanitize_libs,
   requires: [
     'r_util'
   ],

libr/core/canal.c

@@ -770,6 +770,7 @@ static int __core_anal_fcn(RCore *core, ut64 at, ut64 from, int reftype, int dep
 		return false;
 	}
 	fcn->cc = r_str_constpool_get (&core->anal->constpool, r_anal_cc_default (core->anal));
+	r_warn_if_fail (!core->anal->sdb_cc->path || fcn->cc);
 	hint = r_anal_hint_get (core->anal, at);
 	if (hint && hint->bits == 16) {
 		// expand 16bit for function

libr/core/cconfig.c

@@ -1155,11 +1155,10 @@ static bool cb_dirhome(void *user, void *data) {
 	return true;
 }
 
-static bool cb_dirtmp (void *user, void *data) {
-	RConfigNode *node = (RConfigNode*) data;
-	if (node->value) {
-		r_sys_setenv (R_SYS_TMP, node->value);
-	}
+static bool cb_dirtmp(void *user, void *data) {
+	RConfigNode *node = (RConfigNode *)data;
+	char *value = R_STR_ISNOTEMPTY (node->value)? node->value: NULL;
+	r_sys_setenv (R_SYS_TMP, value);
 	return true;
 }
 

libr/core/cfile.c

@@ -438,7 +438,11 @@ static int r_core_file_do_load_for_io_plugin(RCore *r, ut64 baseaddr, ut64 loada
 		return false;
 	}
 	binfile = r_bin_cur (r->bin);
-	r_core_bin_set_env (r, binfile);
+	if (r_core_bin_set_env (r, binfile)) {
+		if (!r->anal->sdb_cc->path) {
+			R_LOG_WARN ("No calling convention defined for this file, analysis may be inaccurate.\n");
+		}
+	}
 	plugin = r_bin_file_cur_plugin (binfile);
 	if (plugin && !strcmp (plugin->name, "any")) {
 		RBinObject *obj = r_bin_cur_object (r->bin);

libr/core/cmd.c

@@ -1740,6 +1740,7 @@ static bool cmd_r2cmd(RCore *core, const char *_input) {
 				return true;
 			}
 		}
+		free (input);
 		return false;
 	}
 	free (input);
@@ -2630,7 +2631,7 @@ static int r_core_cmd_subst(RCore *core, char *cmd) {
 			if (*hash == '\\') {
 				hash++;
 				if (*hash == '#') {
-					hash++;
+					continue;
 				}
 			}
 			if (*hash == '#') {

libr/core/meson.build

@@ -128,6 +128,7 @@ pkgconfig_mod.generate(
   version: r2_version,
   name: 'r_core',
   filebase: 'r_core',
+  libraries: pkgcfg_sanitize_libs,
   requires: pkgconfig_magic_requires + [
     'r_util',
     'r_reg',

libr/crypto/meson.build

@@ -38,6 +38,7 @@ pkgconfig_mod.generate(r_crypto,
   version: r2_version,
   name: 'r_crypto',
   filebase: 'r_crypto',
+  libraries: pkgcfg_sanitize_libs,
   requires: [
     'r_util'
   ],

libr/debug/meson.build

@@ -115,6 +115,7 @@ pkgconfig_mod.generate(r_debug,
   version: r2_version,
   name: 'r_debug',
   filebase: 'r_debug',
+  libraries: pkgcfg_sanitize_libs,
   requires: [
     'r_util',
     'r_hash',

libr/egg/meson.build

@@ -36,6 +36,7 @@ pkgconfig_mod.generate(r_egg,
   version: r2_version,
   name: 'r_egg',
   filebase: 'r_egg',
+  libraries: pkgcfg_sanitize_libs,
   requires: [
     'r_util',
     'r_asm',

libr/flag/meson.build

@@ -23,6 +23,7 @@ pkgconfig_mod.generate(r_flag,
   version: r2_version,
   name: 'r_flag',
   filebase: 'r_flag',
+  libraries: pkgcfg_sanitize_libs,
   requires: [
     'r_util'
   ],

libr/fs/meson.build

@@ -46,6 +46,7 @@ pkgconfig_mod.generate(r_fs,
   version: r2_version,
   name: 'r_fs',
   filebase: 'r_fs',
+  libraries: pkgcfg_sanitize_libs,
   requires: [
     'r_util'
   ],

libr/hash/meson.build

@@ -41,6 +41,7 @@ pkgconfig_mod.generate(r_hash,
   version: r2_version,
   name: 'r_hash',
   filebase: 'r_hash',
+  libraries: pkgcfg_sanitize_libs,
   requires: [
     'r_util'
   ],

libr/io/meson.build

@@ -94,6 +94,7 @@ pkgconfig_mod.generate(r_io,
   version: r2_version,
   name: 'r_io',
   filebase: 'r_io',
+  libraries: pkgcfg_sanitize_libs,
   requires: [
     'r_util',
     'r_socket'

libr/lang/meson.build

@@ -30,6 +30,7 @@ pkgconfig_mod.generate(r_lang,
   version: r2_version,
   name: 'r_lang',
   filebase: 'r_lang',
+  libraries: pkgcfg_sanitize_libs,
   requires: [
     'r_util',
     'r_cons'

libr/magic/meson.build

@@ -36,6 +36,7 @@ pkgconfig_mod.generate(r_magic,
   version: r2_version,
   name: 'r_magic',
   filebase: 'r_magic',
+  libraries: pkgcfg_sanitize_libs,
   requires: [
     'r_util'
   ],

libr/main/meson.build

@@ -56,6 +56,7 @@ pkgconfig_mod.generate(r_main,
   subdirs: 'libr',
   version: r2_version,
   name: 'r_main',
+  libraries: pkgcfg_sanitize_libs,
   filebase: 'r_main',
   requires: [
     'r_core',

libr/parse/meson.build

@@ -43,6 +43,7 @@ pkgconfig_mod.generate(r_parse,
   version: r2_version,
   name: 'r_parse',
   filebase: 'r_parse',
+  libraries: pkgcfg_sanitize_libs,
   requires: [
     'r_util',
     'r_flag',

libr/reg/meson.build

@@ -24,6 +24,7 @@ pkgconfig_mod.generate(r_reg,
   version: r2_version,
   name: 'r_reg',
   filebase: 'r_reg',
+  libraries: pkgcfg_sanitize_libs,
   requires: [
     'r_util'
   ],

libr/search/meson.build

@@ -25,6 +25,7 @@ pkgconfig_mod.generate(r_search,
   version: r2_version,
   name: 'r_search',
   filebase: 'r_search',
+  libraries: pkgcfg_sanitize_libs,
   requires: [
     'r_util'
   ],

libr/socket/meson.build

@@ -33,6 +33,7 @@ pkgconfig_mod.generate(r_socket,
   version: r2_version,
   name: 'r_socket',
   filebase: 'r_socket',
+  libraries: pkgcfg_sanitize_libs,
   requires: [
     'r_util'
   ],

libr/syscall/meson.build

@@ -22,6 +22,7 @@ pkgconfig_mod.generate(r_syscall,
   version: r2_version,
   name: 'r_syscall',
   filebase: 'r_syscall',
+  libraries: pkgcfg_sanitize_libs,
   requires: [
     'r_util'
   ],

libr/util/meson.build

@@ -112,6 +112,7 @@ r_util_dep = declare_dependency(link_with: r_util,
 pkgconfig_mod.generate(r_util,
   subdirs: 'libr',
   version: r2_version,
+  libraries: pkgcfg_sanitize_libs,
   name: 'r_util',
   filebase: 'r_util',
   description: 'radare foundation libraries'

meson.build

@@ -398,6 +398,14 @@ libr_pc = configure_file(
   install_dir: join_paths(get_option('libdir'), 'pkgconfig')
 )
 
+pkgcfg_sanitize_libs = ''
+if get_option('b_sanitize').contains('address')
+  pkgcfg_sanitize_libs += ' -lasan'
+endif
+if get_option('b_sanitize').contains('undefined')
+  pkgcfg_sanitize_libs += ' -lubsan'
+endif
+
 subdir('shlr')
 
 subdir('libr/util')

test/db/archos/darwin-x64/cmd_interpreter

@@ -1,7 +1,7 @@
 NAME=#!c
 FILE=-
 CMDS=<<EOF
-"?e #include <stdio.h>\nint entry(){printf(\"Hello\\n\");}" > .tmp-hashc.c
+"?e #include <stdio.h>\nint entry(){printf(\"Hello\\n\");return 0;}" > .tmp-hashc.c
 #!c .tmp-hashc.c
 rm .tmp-hashc.c
 EOF
@@ -13,7 +13,7 @@ RUN
 NAME=#! with ext != name
 FILE=-
 CMDS=<<EOF
-"?e #include <stdio.h>\nint main(){printf(\"Hello\\n\");}" > .tmp-hashextname.c
+"?e #include <stdio.h>\nint main(){printf(\"Hello\\n\");return 0;}" > .tmp-hashextname.c
 #!cpipe .tmp-hashextname.c
 rm .tmp-hashextname.c
 EOF

test/db/archos/linux-x64/cmd_interpreter

@@ -1,7 +1,7 @@
 NAME=#!c
 FILE=-
 CMDS=<<EOF
-"?e #include <stdio.h>\nint entry(){printf(\"Hello\\n\");}" > .tmp-hashc.c
+"?e #include <stdio.h>\nint entry(){printf(\"Hello\\n\");return 0;}" > .tmp-hashc.c
 #!c .tmp-hashc.c
 rm .tmp-hashc.c
 EOF
@@ -13,7 +13,7 @@ RUN
 NAME=#! with ext != name
 FILE=-
 CMDS=<<EOF
-"?e #include <stdio.h>\nint main(){printf(\"Hello\\n\");}" > .tmp-hashextname.c
+"?e #include <stdio.h>\nint main(){printf(\"Hello\\n\");return 0;}" > .tmp-hashextname.c
 #!cpipe .tmp-hashextname.c
 rm .tmp-hashextname.c
 EOF