Mercurial > pub > dyncall > dyncall
annotate test/dynload_plain/dynload_plain.c @ 382:dd5d03483314
- dynload changes to support macos >= 11.0.1 "built-in dynamic linker cache of all system-provided libraries" (those dylibs are no longer present on the fs)"
* dynload_plain test code changes to reflect this
* note in doc
- changed dynload_plain to not do inode-based tests on windows
| author | Tassilo Philipp |
|---|---|
| date | Wed, 20 Jan 2021 13:49:43 +0100 |
| parents | 3124f4c4f293 |
| children | 7608e34098b0 |
| rev | line source |
|---|---|
| 214 | 1 /* |
| 2 | |
| 3 Package: dyncall | |
| 4 Library: test | |
| 5 File: test/dynload_plain/dynload_plain.c | |
| 281 | 6 Description: |
| 214 | 7 License: |
| 8 | |
| 281 | 9 Copyright (c) 2017-2018 Tassilo Philipp <tphilipp@potion-studios.com> |
| 214 | 10 |
| 11 Permission to use, copy, modify, and distribute this software for any | |
| 12 purpose with or without fee is hereby granted, provided that the above | |
| 13 copyright notice and this permission notice appear in all copies. | |
| 14 | |
| 15 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
| 16 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
| 17 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
| 18 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
| 19 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
| 20 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
| 21 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
| 22 | |
| 23 */ | |
| 24 | |
| 25 | |
| 26 #include "../../dynload/dynload.h" | |
| 27 #include "../common/platformInit.h" | |
| 28 | |
| 29 #include <string.h> | |
| 242 | 30 #include <sys/stat.h> |
| 233 | 31 #if defined(DC_WINDOWS) |
| 32 # include <io.h> | |
| 33 # define F_OK 0 | |
| 34 #else | |
| 35 # include <unistd.h> | |
| 36 #endif | |
|
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37 |
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38 #if defined(DC_WINDOWS) |
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39 char* dirname(char* path) |
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40 { |
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41 static const char dot[] = "."; |
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42 char* p = strrchr(path, '\\'); |
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43 if(p) |
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44 *p = '\0'; |
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45 else |
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46 path = (char*)dot; |
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47 return path; |
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48 } |
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49 #else |
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50 # include <libgen.h> |
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51 #endif |
| 214 | 52 |
| 53 | |
| 308 | 54 int strlen_utf8(const char *s) |
| 55 { | |
| 56 int i=0, j=0; | |
| 57 while(s[i]) | |
| 58 j += ((s[i++] & 0xc0) != 0x80); | |
| 59 return j; | |
| 60 } | |
| 61 | |
| 62 | |
| 214 | 63 int main(int argc, char* argv[]) |
| 64 { | |
| 65 int r = 0, i; | |
| 66 void* p; | |
| 67 DLLib* pLib; | |
| 233 | 68 DLSyms* pSyms; |
| 214 | 69 const char* path = NULL; |
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70 int cmp_inode = 1; |
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71 |
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72 /* hacky/lazy list of some clib paths per platform - more/others, like version-suffixed ones */ |
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73 /* can be specified in Makefile; this avoids trying to write portable directory traversal stuff */ |
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74 const char* clibs[] = { |
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75 #if defined(DEF_C_DYLIB) |
| 308 | 76 DEF_C_DYLIB, |
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77 #endif |
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78 /* fallback guessing if not provided by Makefile */ |
| 214 | 79 "/lib/libc.so", |
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80 "/lib32/libc.so", |
| 214 | 81 "/lib64/libc.so", |
| 242 | 82 "/usr/lib/libc.so", |
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83 "/usr/lib/system/libsystem_c.dylib", /* macos - note: not on fs w/ macos >= 11.0.1 */ |
| 214 | 84 "/usr/lib/libc.dylib", |
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85 "/boot/system/lib/libroot.so", /* Haiku */ |
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86 "\\ReactOS\\system32\\msvcrt.dll", /* ReactOS */ |
| 234 | 87 "C:\\ReactOS\\system32\\msvcrt.dll", |
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88 "\\Windows\\system32\\msvcrt.dll", /* Windows */ |
| 234 | 89 "C:\\Windows\\system32\\msvcrt.dll" |
| 214 | 90 }; |
| 91 | |
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92 /* use first matching path of hacky hardcoded list, above */ |
| 214 | 93 for(i=0; i<(sizeof(clibs)/sizeof(const char*)); ++i) { |
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94 if(access(clibs[i], F_OK) != -1) { |
| 214 | 95 path = clibs[i]; |
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96 break; |
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97 } |
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98 #if defined(DC__OS_Darwin) |
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99 /* macos >= 11.0.1 (Big Sur) dylibs might not be on disk but in a sys cache, so dlopen works but not fs checks */ |
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100 else if((pLib = dlLoadLibrary(clibs[i]))) { |
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101 cmp_inode = 0; /* not dealing with files but dylib sys cache */ |
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102 dlFreeLibrary(pLib); |
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103 path = clibs[i]; |
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104 break; |
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105 } |
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106 #endif |
| 214 | 107 } |
| 108 | |
| 109 if(path) { | |
| 110 printf("using clib to test at: %s\n", path); | |
| 111 ++r; | |
| 112 | |
| 242 | 113 /* dl*Library tests */ |
| 114 /* ---------------- */ | |
| 115 pLib = dlLoadLibrary(path); /* check if we can load a lib */ | |
| 214 | 116 if(pLib) { |
| 242 | 117 char queriedPath[200]; /* enough for our test paths */ |
| 118 int bs; | |
| 119 | |
| 214 | 120 printf("pLib handle: %p\n", pLib); |
| 121 ++r; | |
| 122 | |
| 242 | 123 p = dlFindSymbol(pLib, "printf"); /* check if we can lookup a symbol */ |
| 214 | 124 printf("printf at: %p\n", p); |
| 125 r += (p != NULL); | |
| 126 | |
| 242 | 127 bs = dlGetLibraryPath(pLib, queriedPath, 200); |
| 128 if(bs && bs <= 200) { | |
| 308 | 129 int b, bs_; |
| 242 | 130 printf("path of lib looked up via handle: %s\n", queriedPath); |
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131 |
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132 /*@@@ check if resolved path is absolute*/ |
| 242 | 133 |
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134 #if defined(DC_WINDOWS) |
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135 /* on windows, inode numbers returned by stat(2) tests below are always 0, so don't use those */ |
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136 cmp_inode = 0; |
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137 #endif |
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138 |
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139 /* path based check if same lib */ |
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140 if(cmp_inode) |
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141 { |
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142 struct stat st0, st1; /* to check if same file */ |
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143 b = (stat(path, &st0) != -1) && (stat(queriedPath, &st1) != -1); |
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144 printf("lib (inode:%d) and looked up lib (inode:%d) are same: %d\n", b?(int)st0.st_ino:-1, b?(int)st1.st_ino:-1, b && (st0.st_ino == st1.st_ino)); |
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145 r += b && (st0.st_ino == st1.st_ino); /* compare if same lib using inode */ |
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146 } |
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147 else |
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148 printf("-- skipping inode based check (doesn't apply to this platform or we are dealing with macos dylib that isn't on fs) --\n"); |
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149 |
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150 /* just load lib with queried path and compare handle */ |
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151 { |
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152 DLLib* pLib_ = dlLoadLibrary(queriedPath); |
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153 b = (pLib == pLib_); /* pLib guaranteed to not be NULL, here, so no explicit !pLib_ check */ |
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154 printf("lib (handle:%p) and looked up lib (handle:%p) are same: %d\n", pLib, pLib_, b); |
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155 r += b; |
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156 dlFreeLibrary(pLib_); /* dec ref count */ |
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157 } |
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158 |
| 242 | 159 /* check correct bufsize retval */ |
| 160 b = (bs == strlen(queriedPath) + 1); | |
| 308 | 161 printf("looked up path's needed buffer size (%d) computed correctly 1/2: %d\n", bs, b); |
| 162 r += b; | |
| 163 | |
| 164 /* check perfect fitting bufsize */ | |
| 165 queriedPath[0] = 0; | |
| 166 bs_ = dlGetLibraryPath(pLib, queriedPath, bs); | |
| 167 b = (bs == bs_ && bs_ == strlen(queriedPath) + 1); | |
| 168 printf("looked up path's needed buffer size (%d) computed correctly 2/2: %d\n", bs_, b); | |
| 169 r += b; | |
| 170 | |
| 171 /* check if dlGetLibraryPath returns size required if bufsize too small */ | |
| 172 queriedPath[0] = 0; | |
| 173 bs_ = dlGetLibraryPath(pLib, queriedPath, 1); /* tiny max buffer size */ | |
| 174 b = (bs == bs_ && strlen(queriedPath) == 0); /* nothing copied */ | |
| 175 printf("path lookup size requirement (%d) correctly returned: %d\n", bs_, b); | |
| 242 | 176 r += b; |
| 177 } | |
| 178 else | |
| 179 printf("failed to query lib path using lib's handle\n"); | |
| 180 | |
| 214 | 181 dlFreeLibrary(pLib); |
| 308 | 182 |
| 183 /* check if dlGetLibraryPath returns 0 when trying to lookup dummy */ | |
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184 bs = dlGetLibraryPath((DLLib*)&r/*dummy addr*/, queriedPath, 200); |
| 308 | 185 printf("path lookup failed as expected with bad lib handle: %d\n", bs == 0); |
| 186 r += (bs == 0); | |
| 187 | |
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188 /* test getting own path */ |
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189 { |
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190 /* get own exec's path */ |
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191 bs = dlGetLibraryPath(NULL, queriedPath, 200); |
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192 printf("dynload_plain's own path is: %s\n", queriedPath); |
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193 r += (bs != 0 && strlen(queriedPath) > 0); |
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194 |
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195 /* change working dir to where our executable is, for following test */ |
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196 chdir(dirname(queriedPath)); |
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197 } |
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198 |
| 308 | 199 /* test UTF-8 path through dummy library that's created by this test's build */ |
| 200 { | |
| 201 static const char* pathU8 = "./dynload_plain_\xc3\x9f_test"; | |
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202 int nu8c, b; |
| 308 | 203 |
| 204 pLib = dlLoadLibrary(pathU8); /* check if we can load a lib with a UTF-8 path */ | |
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205 printf("pLib (loaded w/ UTF-8 path %s with wd being exec's dir) handle: %p\n", pathU8, pLib); |
| 308 | 206 r += (p != NULL); |
| 207 | |
| 208 if(pLib) { | |
| 209 /* get UTF-8 path back */ | |
| 210 bs = dlGetLibraryPath((DLLib*)pLib, queriedPath, 200); | |
| 211 if(bs && bs <= 200) { | |
| 212 nu8c = strlen_utf8(queriedPath); /* num of UTF-8 chars is as big as ... */ | |
| 213 b = (bs > 0) && (nu8c == bs-2); /* ... buffer size minus 2 (b/c of one 2-byte UTF-8 char and "\0") */ | |
| 214 printf("UTF-8 path of lib looked up via handle: %s\n", queriedPath); | |
| 215 printf("looked up UTF-8 path's needed buffer size (%d) for %d UTF-8 char string computed correctly: %d\n", bs, nu8c, b); | |
| 216 r += b; | |
| 217 | |
| 218 dlFreeLibrary(pLib); | |
| 219 } | |
| 220 else | |
| 221 printf("failed to query UTF-8 lib path using lib's handle\n"); | |
| 222 } | |
| 223 } | |
| 214 | 224 } |
| 225 else | |
| 226 printf("unable to open library %s\n", path); | |
| 227 | |
| 228 | |
| 242 | 229 /* dlSyms* tests (intentionally after freeing lib above, as they work standalone) */ |
| 230 /* ------------- */ | |
| 231 pSyms = dlSymsInit(path); /* check if we can iterate over symbols - init */ | |
| 214 | 232 if(pSyms) { |
| 233 int n; | |
| 234 const char* name; | |
| 235 | |
| 236 printf("pSyms handle: %p\n", pSyms); | |
| 237 ++r; | |
| 238 | |
| 242 | 239 n = dlSymsCount(pSyms); /* check if there are some syms to iterate over */ |
| 214 | 240 printf("num of libc symbols: %d\n", n); |
| 241 r += (n > 0); | |
| 242 | |
| 243 for(i=0; i<n; ++i) { | |
| 244 name = dlSymsName(pSyms, i); | |
| 242 | 245 if(name && strcmp(name, "printf") == 0) { /* check if we find "printf" also in iterated symbols */ |
| 214 | 246 ++r; |
| 247 break; | |
| 248 } | |
| 249 } | |
| 250 printf("printf symbol found by iteration: %d\n", i<n); | |
| 251 | |
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252 name = (i<n) ? dlSymsName(pSyms, i) : NULL; |
| 242 | 253 r += (name && strcmp(name, "printf") == 0); /* check if we can lookup "printf" by index */ |
| 218 | 254 printf("printf symbol name by index: %s\n", name?name:""); |
| 214 | 255 |
| 242 | 256 pLib = dlLoadLibrary(path); /* check if we can resolve ptr -> name, */ |
| 257 if(pLib) { /* need to lookup by name again, first */ | |
| 214 | 258 p = dlFindSymbol(pLib, "printf"); |
| 259 name = dlSymsNameFromValue(pSyms, p); | |
| 218 | 260 printf("printf symbol name by its own address (%p): %s\n", p, name?name:""); |
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261 if(name) { |
| 308 | 262 if(strcmp(name, "printf") == 0) |
| 263 ++r; | |
| 264 else { | |
| 265 /* Symbol name returned might be an "alias". In that case, check address again (full lookup to be sure). */ | |
| 266 void* p0 = dlFindSymbol(pLib, name); | |
| 267 printf("lookup by address returned different name (%s), which is alias of printf: %d\n", name, (p==p0)); | |
| 268 r += (p == p0); | |
| 269 } | |
| 270 } | |
| 214 | 271 dlFreeLibrary(pLib); |
| 272 } | |
| 273 | |
| 274 dlSymsCleanup(pSyms); | |
| 275 } | |
| 276 else | |
| 277 printf("dlSymsInit failed\n"); | |
| 278 } | |
| 279 | |
| 242 | 280 /* Check final score of right ones to see if all worked */ |
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281 r = (r == 16 + cmp_inode); |
| 214 | 282 printf("result: dynload_plain: %d\n", r); |
| 283 return !r; | |
| 284 } | |
| 285 |