Mercurial > pub > dyncall > dyncall
annotate test/dynload_plain/dynload_plain.c @ 311:5b1ff4c73194
- test code fix avoiding sigsegv on some platforms
| author | Tassilo Philipp |
|---|---|
| date | Sat, 26 Oct 2019 22:02:32 +0200 |
| parents | 7c6f19d42b31 |
| children | 18de5758980e |
| 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 | |
| 214 | 37 |
| 38 | |
| 308 | 39 int strlen_utf8(const char *s) |
| 40 { | |
| 41 int i=0, j=0; | |
| 42 while(s[i]) | |
| 43 j += ((s[i++] & 0xc0) != 0x80); | |
| 44 return j; | |
| 45 } | |
| 46 | |
| 47 | |
| 214 | 48 int main(int argc, char* argv[]) |
| 49 { | |
| 50 int r = 0, i; | |
| 51 void* p; | |
| 52 DLLib* pLib; | |
| 233 | 53 DLSyms* pSyms; |
| 214 | 54 const char* path = NULL; |
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55 /* hacky/lazy list of some clib paths per platform - more/others, like version-suffixed ones */ |
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56 /* can be specified in Makefile; this avoids trying to write portable directory traversal stuff */ |
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57 const char* clibs[] = { |
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58 #if defined(DEF_C_DYLIB) |
| 308 | 59 DEF_C_DYLIB, |
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60 #endif |
| 214 | 61 "/lib/libc.so", |
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62 "/lib32/libc.so", |
| 214 | 63 "/lib64/libc.so", |
| 242 | 64 "/usr/lib/libc.so", |
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65 "/usr/lib/system/libsystem_c.dylib", /* macos */ |
| 214 | 66 "/usr/lib/libc.dylib", |
| 248 | 67 "/boot/system/lib/libroot.so", /* Haiku */ |
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68 "\\ReactOS\\system32\\msvcrt.dll", /* ReactOS */ |
| 234 | 69 "C:\\ReactOS\\system32\\msvcrt.dll", |
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70 "\\Windows\\system32\\msvcrt.dll", /* Windows */ |
| 234 | 71 "C:\\Windows\\system32\\msvcrt.dll" |
| 214 | 72 }; |
| 73 | |
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74 /* use first matching path of hacky hardcoded list, above */ |
| 214 | 75 for(i=0; i<(sizeof(clibs)/sizeof(const char*)); ++i) { |
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76 if(access(clibs[i], F_OK) != -1) { |
| 214 | 77 path = clibs[i]; |
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78 break; |
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79 } |
| 214 | 80 } |
| 81 | |
| 82 if(path) { | |
| 83 printf("using clib to test at: %s\n", path); | |
| 84 ++r; | |
| 85 | |
| 242 | 86 /* dl*Library tests */ |
| 87 /* ---------------- */ | |
| 88 pLib = dlLoadLibrary(path); /* check if we can load a lib */ | |
| 214 | 89 if(pLib) { |
| 242 | 90 char queriedPath[200]; /* enough for our test paths */ |
| 91 int bs; | |
| 92 | |
| 214 | 93 printf("pLib handle: %p\n", pLib); |
| 94 ++r; | |
| 95 | |
| 242 | 96 p = dlFindSymbol(pLib, "printf"); /* check if we can lookup a symbol */ |
| 214 | 97 printf("printf at: %p\n", p); |
| 98 r += (p != NULL); | |
| 99 | |
| 242 | 100 bs = dlGetLibraryPath(pLib, queriedPath, 200); |
| 101 if(bs && bs <= 200) { | |
| 308 | 102 struct stat st0, st1; /* to check if same file */ |
| 103 int b, bs_; | |
| 242 | 104 printf("path of lib looked up via handle: %s\n", queriedPath); |
| 105 b = (stat(path, &st0) != -1) && (stat(queriedPath, &st1) != -1); | |
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106 printf("lib (inode:%d) and looked up lib (inode:%d) are same: %d\n", b?st0.st_ino:-1, b?st1.st_ino:-1, b && (st0.st_ino == st1.st_ino)); //@@@ on windows, inode numbers returned here are always 0 |
| 242 | 107 r += b && (st0.st_ino == st1.st_ino); /* compare if same lib using inode */ |
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108 /*@@@ check if resolved path is absolute*/ |
| 242 | 109 |
| 110 /* check correct bufsize retval */ | |
| 111 b = (bs == strlen(queriedPath) + 1); | |
| 308 | 112 printf("looked up path's needed buffer size (%d) computed correctly 1/2: %d\n", bs, b); |
| 113 r += b; | |
| 114 | |
| 115 /* check perfect fitting bufsize */ | |
| 116 queriedPath[0] = 0; | |
| 117 bs_ = dlGetLibraryPath(pLib, queriedPath, bs); | |
| 118 b = (bs == bs_ && bs_ == strlen(queriedPath) + 1); | |
| 119 printf("looked up path's needed buffer size (%d) computed correctly 2/2: %d\n", bs_, b); | |
| 120 r += b; | |
| 121 | |
| 122 /* check if dlGetLibraryPath returns size required if bufsize too small */ | |
| 123 queriedPath[0] = 0; | |
| 124 bs_ = dlGetLibraryPath(pLib, queriedPath, 1); /* tiny max buffer size */ | |
| 125 b = (bs == bs_ && strlen(queriedPath) == 0); /* nothing copied */ | |
| 126 printf("path lookup size requirement (%d) correctly returned: %d\n", bs_, b); | |
| 242 | 127 r += b; |
| 128 } | |
| 129 else | |
| 130 printf("failed to query lib path using lib's handle\n"); | |
| 131 | |
| 214 | 132 dlFreeLibrary(pLib); |
| 308 | 133 |
| 134 /* check if dlGetLibraryPath returns 0 when trying to lookup dummy */ | |
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135 bs = dlGetLibraryPath((DLLib*)&r/*dummy addr in own addr space to avoid segv*/, queriedPath, 200); |
| 308 | 136 printf("path lookup failed as expected with bad lib handle: %d\n", bs == 0); |
| 137 r += (bs == 0); | |
| 138 | |
| 139 /* test UTF-8 path through dummy library that's created by this test's build */ | |
| 140 { | |
| 141 static const char* pathU8 = "./dynload_plain_\xc3\x9f_test"; | |
| 142 int nu8c, b; | |
| 143 | |
| 144 //cp(pathU8, "/lib/libz.so.6"); | |
| 145 pLib = dlLoadLibrary(pathU8); /* check if we can load a lib with a UTF-8 path */ | |
| 146 printf("pLib (loaded w/ UTF-8 path %s) handle: %p\n", pathU8, pLib); | |
| 147 r += (p != NULL); | |
| 148 | |
| 149 if(pLib) { | |
| 150 /* get UTF-8 path back */ | |
| 151 bs = dlGetLibraryPath((DLLib*)pLib, queriedPath, 200); | |
| 152 if(bs && bs <= 200) { | |
| 153 nu8c = strlen_utf8(queriedPath); /* num of UTF-8 chars is as big as ... */ | |
| 154 b = (bs > 0) && (nu8c == bs-2); /* ... buffer size minus 2 (b/c of one 2-byte UTF-8 char and "\0") */ | |
| 155 printf("UTF-8 path of lib looked up via handle: %s\n", queriedPath); | |
| 156 printf("looked up UTF-8 path's needed buffer size (%d) for %d UTF-8 char string computed correctly: %d\n", bs, nu8c, b); | |
| 157 r += b; | |
| 158 | |
| 159 dlFreeLibrary(pLib); | |
| 160 } | |
| 161 else | |
| 162 printf("failed to query UTF-8 lib path using lib's handle\n"); | |
| 163 } | |
| 164 } | |
| 214 | 165 } |
| 166 else | |
| 167 printf("unable to open library %s\n", path); | |
| 168 | |
| 169 | |
| 242 | 170 /* dlSyms* tests (intentionally after freeing lib above, as they work standalone) */ |
| 171 /* ------------- */ | |
| 172 pSyms = dlSymsInit(path); /* check if we can iterate over symbols - init */ | |
| 214 | 173 if(pSyms) { |
| 174 int n; | |
| 175 const char* name; | |
| 176 | |
| 177 printf("pSyms handle: %p\n", pSyms); | |
| 178 ++r; | |
| 179 | |
| 242 | 180 n = dlSymsCount(pSyms); /* check if there are some syms to iterate over */ |
| 214 | 181 printf("num of libc symbols: %d\n", n); |
| 182 r += (n > 0); | |
| 183 | |
| 184 for(i=0; i<n; ++i) { | |
| 185 name = dlSymsName(pSyms, i); | |
| 242 | 186 if(name && strcmp(name, "printf") == 0) { /* check if we find "printf" also in iterated symbols */ |
| 214 | 187 ++r; |
| 188 break; | |
| 189 } | |
| 190 } | |
| 191 printf("printf symbol found by iteration: %d\n", i<n); | |
| 192 | |
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193 name = (i<n) ? dlSymsName(pSyms, i) : NULL; |
| 242 | 194 r += (name && strcmp(name, "printf") == 0); /* check if we can lookup "printf" by index */ |
| 218 | 195 printf("printf symbol name by index: %s\n", name?name:""); |
| 214 | 196 |
| 242 | 197 pLib = dlLoadLibrary(path); /* check if we can resolve ptr -> name, */ |
| 198 if(pLib) { /* need to lookup by name again, first */ | |
| 214 | 199 p = dlFindSymbol(pLib, "printf"); |
| 200 name = dlSymsNameFromValue(pSyms, p); | |
| 218 | 201 printf("printf symbol name by its own address (%p): %s\n", p, name?name:""); |
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202 if(name) { |
| 308 | 203 if(strcmp(name, "printf") == 0) |
| 204 ++r; | |
| 205 else { | |
| 206 /* Symbol name returned might be an "alias". In that case, check address again (full lookup to be sure). */ | |
| 207 void* p0 = dlFindSymbol(pLib, name); | |
| 208 printf("lookup by address returned different name (%s), which is alias of printf: %d\n", name, (p==p0)); | |
| 209 r += (p == p0); | |
| 210 } | |
| 211 } | |
| 214 | 212 dlFreeLibrary(pLib); |
| 213 } | |
| 214 | |
| 215 dlSymsCleanup(pSyms); | |
| 216 } | |
| 217 else | |
| 218 printf("dlSymsInit failed\n"); | |
| 219 } | |
| 220 | |
| 242 | 221 /* Check final score of right ones to see if all worked */ |
| 308 | 222 r = (r == 15); |
| 214 | 223 printf("result: dynload_plain: %d\n", r); |
| 224 return !r; | |
| 225 } | |
| 226 |