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-rw-r--r--src/gameinfo.c212
1 files changed, 86 insertions, 126 deletions
diff --git a/src/gameinfo.c b/src/gameinfo.c
index 7dfcc53..42bf3b4 100644
--- a/src/gameinfo.c
+++ b/src/gameinfo.c
@@ -22,40 +22,41 @@
#endif
#include "con_.h"
+#include "gametype.h"
#include "intdefs.h"
#include "kv.h"
#include "os.h"
+#include "vcall.h"
-// Formatting for os_char * -> char * (or vice versa) - needed for con_warn()s
-// with file paths, etc
#ifdef _WIN32
#define fS "S" // os string (wide string) to regular string
#define Fs L"S" // regular string to os string (wide string)
+#define PATHSEP L"\\" // for joining. could just be / but \ is more consistent
#else
// everything is just a regular string already
#define fS "s"
#define Fs "s"
+#define PATHSEP "/"
#endif
-static os_char exedir[PATH_MAX];
-static os_char gamedir[PATH_MAX];
-static char _gameinfo_title[64] = {0};
-const char *gameinfo_title = _gameinfo_title;
-static os_char _gameinfo_clientlib[PATH_MAX] = {0};
-const os_char *gameinfo_clientlib = _gameinfo_clientlib;
-static os_char _gameinfo_serverlib[PATH_MAX] = {0};
-const os_char *gameinfo_serverlib = _gameinfo_serverlib;
+// TODO(opt): get rid of the rest of the snprintf and strcpy, some day
-// magical argc/argv grabber so we don't have to go through procfs
-#ifdef __linux__
-static const char *const *prog_argv;
-static int storeargs(int argc, char *argv[]) {
- prog_argv = (const char *const *)argv;
- return 0;
-}
-__attribute__((used, section(".init_array")))
-static void *pstoreargs = (void *)&storeargs;
+static os_char bindir[PATH_MAX] = {0};
+#ifdef _WIN32
+static os_char gamedir[PATH_MAX] = {0};
+#endif
+static os_char clientlib[PATH_MAX] = {0};
+static os_char serverlib[PATH_MAX] = {0};
+static char title[64] = {0};
+
+const os_char *gameinfo_bindir = bindir;
+const os_char *gameinfo_gamedir
+#ifdef _WIN32
+ = gamedir; // on linux, the pointer gets directly set in gameinfo_init()
#endif
+const os_char *gameinfo_clientlib = clientlib;
+const os_char *gameinfo_serverlib = serverlib;
+const char *gameinfo_title = title;
// case insensitive substring match, expects s2 to be lowercase already!
// note: in theory this shouldn't need to be case sensitive, but I've seen mods
@@ -65,7 +66,7 @@ static bool matchtok(const char *s1, const char *s2, usize sz) {
return true;
}
-static void try_gamelib(const os_char *path, os_char *outpath) {
+static void trygamelib(const os_char *path, os_char *outpath) {
// _technically_ this is toctou, but I don't think that matters here
if (os_access(path, F_OK) != -1) {
os_strcpy(outpath, path);
@@ -77,13 +78,14 @@ static void try_gamelib(const os_char *path, os_char *outpath) {
}
// note: p and len are a non-null-terminated string
-static inline void do_gamelib_search(const char *p, uint len, bool isgamebin) {
+static inline void dolibsearch(const char *p, uint len, bool isgamebin,
+ const os_char *cwd) {
// sanity check: don't do a bunch of work for no reason
if (len >= PATH_MAX - 1 - (sizeof("client" OS_DLSUFFIX) - 1)) goto toobig;
os_char bindir[PATH_MAX];
os_char *outp = bindir;
// this should really be an snprintf, meh whatever
- os_strcpy(bindir, exedir);
+ os_strcpy(bindir, cwd);
outp = bindir + os_strlen(bindir);
// quick note about windows encoding conversion: this MIGHT clobber the
// encoding of non-ascii mod names, but it's unclear if/how source handles
@@ -136,17 +138,18 @@ toobig: con_warn("gameinfo: skipping an overly long search path\n");
outp += ret;
if (!*gameinfo_clientlib) {
os_strcpy(outp, OS_LIT("client" OS_DLSUFFIX));
- try_gamelib(bindir, _gameinfo_clientlib);
+ trygamelib(bindir, clientlib);
}
if (!*gameinfo_serverlib) {
os_strcpy(outp, OS_LIT("server" OS_DLSUFFIX));
- try_gamelib(bindir, _gameinfo_serverlib);
+ trygamelib(bindir, serverlib);
}
}
-// state for the callback below to keep it somewhat reentrant-ish (except where
-// it isn't because I got lazy and wrote some spaghetti)
+// state for the callback below to keep it somewhat reentrant (except where
+// it's not because I got lazy and wrote some spaghetti)
struct kv_parsestate {
+ const os_char *cwd;
// after parsing a key we *don't* care about, how many nested subkeys have
// we come across?
short dontcarelvl;
@@ -208,21 +211,21 @@ static void kv_cb(enum kv_token type, const char *p, uint len, void *_ctxt) {
break;
case KV_VAL: case KV_VAL_QUOTED:
if (ctxt->dontcarelvl) break;
- if (ctxt->matchtype == mt_title) {
+ // dumb hack: ignore Survivors title (they left it set to "Left 4
+ // Dead 2" but it clearly isn't Left 4 Dead 2)
+ if (ctxt->matchtype == mt_title && !GAMETYPE_MATCHES(L4DS)) {
// title really shouldn't get this long, but truncate just to
// avoid any trouble...
// also note: leaving 1 byte of space for null termination (the
// buffer is already zeroed initially)
- if (len > sizeof(_gameinfo_title) - 1) {
- len = sizeof(_gameinfo_title) - 1;
- }
- memcpy(_gameinfo_title, p, len);
+ if (len > sizeof(title) - 1) len = sizeof(title) - 1;
+ memcpy(title, p, len);
}
else if (ctxt->matchtype == mt_game ||
ctxt->matchtype == mt_gamebin) {
// if we already have everything, we can just stop!
if (*gameinfo_clientlib && *gameinfo_serverlib) break;
- do_gamelib_search(p, len, ctxt->matchtype == mt_gamebin);
+ dolibsearch(p, len, ctxt->matchtype == mt_gamebin, ctxt->cwd);
}
ctxt->matchtype = mt_none;
break;
@@ -236,112 +239,67 @@ static void kv_cb(enum kv_token type, const char *p, uint len, void *_ctxt) {
#undef MATCH
}
-bool gameinfo_init(void) {
- const os_char *modname = OS_LIT("hl2");
-#ifdef _WIN32
- int len = GetModuleFileNameW(0, exedir, PATH_MAX);
- if (!len) {
- char err[128];
- OS_WINDOWS_ERROR(err);
- con_warn("gameinfo: couldn't get EXE path: %s\n", err);
- return false;
- }
- // if the buffer is full and has no null, it's truncated
- if (len == PATH_MAX && exedir[len - 1] != L'\0') {
- con_warn("gameinfo: EXE path is too long!\n");
- return false;
+bool gameinfo_init(void *(*ifacef)(const char *, int *)) {
+ typedef char *(*VCALLCONV GetGameDirectory_func)(void *this);
+ GetGameDirectory_func **engclient;
+ int off;
+ if (engclient = ifacef("VEngineClient014", 0)) { // bms, l4d2 2000
+ off = 36;
}
-#else
- int len = readlink("/proc/self/exe", exedir, PATH_MAX);
- if (len == -1) {
- con_warn("gameinfo: couldn't get program path: %s\n", strerror(errno));
- return false;
+ else if (engclient = ifacef("VEngineClient013", 0)) { // ...most things?
+ if (GAMETYPE_MATCHES(L4D2)) off = 36; // they changed it BACK?!?
+ else off = 35;
}
- // if the buffer is full at all, it's truncated (readlink never writes \0)
- if (len == PATH_MAX) {
- con_warn("gameinfo: program path is too long!\n");
- return false;
+ else if (engclient = ifacef("VEngineClient012", 0)) { // dmomm, ep1, ...
+ off = 37;
}
else {
- exedir[len] = '\0';
+ con_warn("gameinfo: unsupported VEngineClient interface\n");
+ return false;
}
-#endif
- // find the last slash
- os_char *p;
- for (p = exedir + len - 1; *p != OS_LIT('/')
-#ifdef _WIN32
- && *p != L'\\'
-#endif
- ; --p);
- // ... and split on it
- *p = 0;
- const os_char *exename = p + 1;
-#ifdef _WIN32
- // try and infer the default mod name (when -game isn't given) from the exe
- // name for a few known games
- if (!_wcsicmp(exename, L"left4dead2.exe")) modname = L"left4dead2";
- else if (!_wcsicmp(exename, L"left4dead.exe")) modname = L"left4dead";
- else if (!_wcsicmp(exename, L"portal2.exe")) modname = L"portal2";
+ GetGameDirectory_func GetGameDirectory = (*engclient)[off];
- const ushort *args = GetCommandLineW();
- const ushort *argp = args;
- ushort modbuf[PATH_MAX];
- // have to take the _last_ occurence of -game because sourcemods get the
- // flag twice, for some reason
- while (argp = wcsstr(argp, L" -game ")) {
- argp += 7;
- while (*argp == L' ') ++argp;
- ushort sep = L' ';
- // WARNING: not handling escaped quotes and such nonsense, since you
- // can't have quotes in filepaths anyway outside of UNC and I'm just
- // assuming there's no way Source could even be started with such an
- // insanely named mod. We'll see how this assumption holds up!
- if (*argp == L'"') {
- ++argp;
- sep = L'"';
- }
- ushort *bufp = modbuf;
- for (; *argp != L'\0' && *argp != sep; ++argp, ++bufp) {
- if (bufp - modbuf == PATH_MAX - 1) {
- con_warn("gameinfo: mod name parameter is too long\n");
- return false;
- }
- *bufp = *argp;
- }
- *bufp = L'\0';
- modname = modbuf;
+ // engine always calls chdir() with its own base path on startup, so engine
+ // base dir is just cwd
+ os_char cwd[PATH_MAX];
+ if (!os_getcwd(cwd, sizeof(cwd) / sizeof(*cwd))) {
+ con_warn("gameinfo: couldn't get working directory: %s\n",
+ strerror(errno));
+ return false;
}
- bool isrelative = PathIsRelativeW(modname);
-#else
- // also do the executable name check just for portal2_linux
- if (!strcmp(exename, "portal2_linux")) modname = "portal2";
- // ah, the sane, straightforward world of unix command line arguments :)
- for (const char *const *pp = prog_argv + 1; *pp; ++pp) {
- if (!strcmp(*pp, "-game")) {
- if (!*++pp) break;
- modname = *pp;
- }
+ int len = os_strlen(cwd);
+ if (len + sizeof("/bin") > sizeof(bindir) / sizeof(*bindir)) {
+ con_warn("gameinfo: working directory path is too long!\n");
+ return false;
}
- // ah, the sane, straightforward world of unix paths :)
- bool isrelative = modname[0] != '/';
-#endif
+ memcpy(bindir, cwd, len * sizeof(*cwd));
+ memcpy(bindir + len, PATHSEP OS_LIT("bin"), 5 * sizeof(os_char));
- int ret = isrelative ?
- os_snprintf(gamedir, PATH_MAX, OS_LIT("%s/%s"), exedir, modname) :
- // mod name might actually be an absolute (if installed in steam
- // sourcemods for example)
- os_snprintf(gamedir, PATH_MAX, OS_LIT("%s"), modname);
- if (ret >= PATH_MAX) {
- con_warn("gameinfo: game directory path is too long!\n");
+#ifdef _WIN32
+ int gamedirlen = _snwprintf(gamedir, sizeof(gamedir) / sizeof(*gamedir),
+ L"%S", GetGameDirectory(engclient));
+ if (gamedirlen < 0) { // encoding error??? ugh...
+ con_warn("gameinfo: invalid game directory path!\n");
return false;
}
- os_char gameinfopath[PATH_MAX];
- if (os_snprintf(gameinfopath, PATH_MAX, OS_LIT("%s/gameinfo.txt"),
- gamedir) >= PATH_MAX) {
- con_warn("gameinfo: gameinfo.txt path is too long!\n");
+ // immediately bounds check /gameinfo as we cat that into an equal sized
+ // buffer down below :^)
+ if (gamedirlen + sizeof("/gameinfo.txt") > sizeof(gamedir) /
+ sizeof(*gamedir)) {
+ con_warn("gameinfo: game directory path is too long!\n");
return false;
}
+#else
+ // no need to munge charset, use the string pointer directly
+ gameinfo_gamedir = GetGameDirectory(engclient);
+ int gamedirlen = strlen(gameinfo_gamedir);
+#endif
+ os_char gameinfopath[PATH_MAX];
+ memcpy(gameinfopath, gameinfo_gamedir, gamedirlen *
+ sizeof(*gameinfo_gamedir));
+ memcpy(gameinfopath + gamedirlen, PATHSEP OS_LIT("gameinfo.txt"),
+ 14 * sizeof(os_char));
int fd = os_open(gameinfopath, O_RDONLY);
if (fd == -1) {
con_warn("gameinfo: couldn't open gameinfo.txt: %s\n", strerror(errno));
@@ -349,7 +307,7 @@ bool gameinfo_init(void) {
}
char buf[1024];
struct kv_parser kvp = {0};
- struct kv_parsestate ctxt = {0};
+ struct kv_parsestate ctxt = {.cwd = cwd};
int nread;
while (nread = read(fd, buf, sizeof(buf))) {
if (nread == -1) {
@@ -360,8 +318,10 @@ bool gameinfo_init(void) {
if (!kv_parser_feed(&kvp, buf, nread, &kv_cb, &ctxt)) goto ep;
}
if (!kv_parser_done(&kvp)) goto ep;
-
close(fd);
+
+ // dumb hack pt2, see also kv callback above
+ if (GAMETYPE_MATCHES(L4DS)) gameinfo_title = "Left 4 Dead: Survivors";
return true;
ep: con_warn("gameinfo: couldn't parse gameinfo.txt (%d:%d): %s\n",
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-17 08:50:21 +0000