| 1 | // vim:shiftwidth=2:expandtab |
| 2 | #include <stdio.h> |
| 3 | #include <stdlib.h> |
| 4 | #include <string.h> |
| 5 | #include <stdarg.h> |
| 6 | #include <unistd.h> |
| 7 | #include <elf.h> |
| 8 | #include <sys/stat.h> |
| 9 | #include <ctype.h> |
| 10 | |
| 11 | #include "../common/host_fb.h" |
| 12 | #include "../common/cmn.h" |
| 13 | |
| 14 | #define PFX "ging_prep: " |
| 15 | #define LOADER_STATIC "ginge_sloader" |
| 16 | #define LOADER_DYNAMIC "ginge_dyn.sh" |
| 17 | #define LAUNCHER "gp2xmenu" |
| 18 | |
| 19 | #ifdef PND |
| 20 | #define WRAP_APP "op_runfbapp " |
| 21 | #else |
| 22 | #define WRAP_APP "" |
| 23 | #endif |
| 24 | |
| 25 | #include "font.c" |
| 26 | |
| 27 | static void *fb_mem; |
| 28 | static int fb_stride; |
| 29 | static int fb_x, fb_y; |
| 30 | static int init_done; |
| 31 | |
| 32 | static char *sskip(char *p) |
| 33 | { |
| 34 | while (p && *p && isspace(*p)) |
| 35 | p++; |
| 36 | return p; |
| 37 | } |
| 38 | |
| 39 | static char *cskip(char *p) |
| 40 | { |
| 41 | while (p && *p && !isspace(*p)) |
| 42 | p++; |
| 43 | return p; |
| 44 | } |
| 45 | |
| 46 | static void fb_text_init(void) |
| 47 | { |
| 48 | int ret = host_video_init(&fb_stride, 1); |
| 49 | if (ret == 0) |
| 50 | fb_mem = host_video_flip(); |
| 51 | fb_x = 4; |
| 52 | fb_y = 4; |
| 53 | init_done = 1; |
| 54 | } |
| 55 | |
| 56 | static void fb_syms_out(void *fbi, int x, int y, int dotsz, int stride, const char *text, int count) |
| 57 | { |
| 58 | int v = -1, n = 0, *p; |
| 59 | int i, l; |
| 60 | char *fb; |
| 61 | |
| 62 | fb = (char *)fbi + x * dotsz + y * stride; |
| 63 | |
| 64 | for (i = 0; i < count; i++) |
| 65 | { |
| 66 | for (l = 0; l < 8; l++) |
| 67 | { |
| 68 | #define pix(fdmask,add) \ |
| 69 | p = (fontdata8x8[((text[i])*8)+l] & fdmask) ? &v : &n; \ |
| 70 | memcpy(fb + l*stride + add*dotsz, p, dotsz) |
| 71 | pix(0x80, 0); |
| 72 | pix(0x40, 1); |
| 73 | pix(0x20, 2); |
| 74 | pix(0x10, 3); |
| 75 | pix(0x08, 4); |
| 76 | pix(0x04, 5); |
| 77 | pix(0x02, 6); |
| 78 | pix(0x01, 7); |
| 79 | #undef pix |
| 80 | } |
| 81 | fb += dotsz * 8; |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | // FIXME: y overrun |
| 86 | static void fb_text_out(char *text) |
| 87 | { |
| 88 | int dotsz = 2, w = 320; // hardcoded for now |
| 89 | char *p, *pe; |
| 90 | int l; |
| 91 | |
| 92 | if (!init_done) |
| 93 | fb_text_init(); |
| 94 | |
| 95 | if (fb_mem == NULL) |
| 96 | return; |
| 97 | |
| 98 | p = text; |
| 99 | while (*p) { |
| 100 | for (; *p && isspace(*p); p++) { |
| 101 | if (*p == '\n' || fb_x + dotsz * 8 > w) { |
| 102 | fb_x = 4; |
| 103 | fb_y += 8; |
| 104 | } |
| 105 | if (*p >= 0x20) |
| 106 | fb_x += 8; |
| 107 | } |
| 108 | |
| 109 | pe = cskip(p); |
| 110 | l = pe - p; |
| 111 | if (fb_x + 8 * l > w) { |
| 112 | fb_x = 4; |
| 113 | fb_y += 8; |
| 114 | } |
| 115 | fb_syms_out(fb_mem, fb_x, fb_y, dotsz, fb_stride, p, l); |
| 116 | fb_x += 8 * l; |
| 117 | p = pe; |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | static void fbprintf(int is_err, const char *format, ...) |
| 122 | { |
| 123 | va_list ap; |
| 124 | char buff[512]; |
| 125 | |
| 126 | va_start(ap, format); |
| 127 | vsnprintf(buff, sizeof(buff), format, ap); |
| 128 | va_end(ap); |
| 129 | fputs(buff, is_err ? stderr : stdout); |
| 130 | |
| 131 | fb_text_out(buff); |
| 132 | } |
| 133 | |
| 134 | #define msg(fmt, ...) fbprintf(0, fmt, #__VA_ARGS__) |
| 135 | #define err(fmt, ...) fbprintf(1, fmt, #__VA_ARGS__) |
| 136 | |
| 137 | static int id_elf(const char *fname) |
| 138 | { |
| 139 | Elf32_Ehdr hdr; |
| 140 | Elf32_Phdr *phdr = NULL; |
| 141 | FILE *fi; |
| 142 | int i, ret = 0; |
| 143 | |
| 144 | fi = fopen(fname, "rb"); |
| 145 | if (fi == NULL) { |
| 146 | err("open %s: ", fname); |
| 147 | perror(""); |
| 148 | return -1; |
| 149 | } |
| 150 | |
| 151 | if (fread(&hdr, 1, sizeof(hdr), fi) != sizeof(hdr)) |
| 152 | goto out; |
| 153 | |
| 154 | if (memcmp(hdr.e_ident, ELFMAG "\x01\x01", SELFMAG + 2) != 0) |
| 155 | goto out; |
| 156 | |
| 157 | if (hdr.e_phentsize != sizeof(Elf32_Phdr) || hdr.e_phnum == 0) |
| 158 | goto out; |
| 159 | |
| 160 | phdr = malloc(hdr.e_phnum * hdr.e_phentsize); |
| 161 | if (phdr == NULL) |
| 162 | goto out; |
| 163 | |
| 164 | if (fread(phdr, hdr.e_phentsize, hdr.e_phnum, fi) != hdr.e_phnum) |
| 165 | goto out; |
| 166 | |
| 167 | ret = 1; |
| 168 | |
| 169 | // do what 'file' does - check for PT_INTERP in program headers |
| 170 | for (i = 0; i < hdr.e_phnum; i++) { |
| 171 | if (phdr[i].p_type == PT_INTERP) { |
| 172 | ret = 2; |
| 173 | break; |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | out: |
| 178 | fclose(fi); |
| 179 | free(phdr); |
| 180 | return ret; |
| 181 | } |
| 182 | |
| 183 | static void dump_args(FILE *fout, int argc, char * const argv[]) |
| 184 | { |
| 185 | const char *p; |
| 186 | int i; |
| 187 | |
| 188 | for (i = 0; i < argc; i++) { |
| 189 | if (i != 0) |
| 190 | fputc(' ', fout); |
| 191 | fputc('"', fout); |
| 192 | |
| 193 | for (p = argv[i]; *p != 0; p++) { |
| 194 | if (*p == '"') |
| 195 | fputc('\\', fout); |
| 196 | fputc(*p, fout); |
| 197 | } |
| 198 | |
| 199 | fputc('"', fout); |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | static char *get_arg(char *d, size_t size, char *p) |
| 204 | { |
| 205 | char *pe; |
| 206 | int len; |
| 207 | |
| 208 | p = sskip(p); |
| 209 | pe = cskip(p); |
| 210 | len = pe - p; |
| 211 | |
| 212 | if (len > size - 1) { |
| 213 | err(PFX "get_arg: buff to small: %d/%d\n", len, size); |
| 214 | len = size - 1; |
| 215 | } |
| 216 | strncpy(d, p, len); |
| 217 | d[len] = 0; |
| 218 | |
| 219 | return sskip(pe); |
| 220 | } |
| 221 | |
| 222 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) |
| 223 | |
| 224 | #define CB_ENTRY(x) { x, sizeof(x) - 1 } |
| 225 | const struct { |
| 226 | const char *name; |
| 227 | int len; |
| 228 | } conv_blacklist[] = { |
| 229 | CB_ENTRY("insmod"), |
| 230 | CB_ENTRY("modprobe"), |
| 231 | CB_ENTRY("umount"), |
| 232 | CB_ENTRY("./cpuctrl_tiny"), |
| 233 | }; |
| 234 | |
| 235 | static int cmd_in_blacklist(char *cmd) |
| 236 | { |
| 237 | int i; |
| 238 | |
| 239 | cmd = sskip(cmd); |
| 240 | for (i = 0; i < ARRAY_SIZE(conv_blacklist); i++) |
| 241 | if (strncmp(cmd, conv_blacklist[i].name, conv_blacklist[i].len) == 0) |
| 242 | return 1; |
| 243 | |
| 244 | return 0; |
| 245 | } |
| 246 | |
| 247 | int main(int argc, char *argv[]) |
| 248 | { |
| 249 | static const char out_script[] = "/tmp/ginge_conv.sh"; |
| 250 | char root_path[512], cwd[512]; |
| 251 | int have_cramfs = 0; |
| 252 | int rerun_gp2xmenu = 1; |
| 253 | FILE *fin, *fout; |
| 254 | int ret; |
| 255 | |
| 256 | if (argc < 2) { |
| 257 | err("usage: %s <script|program> [args]\n", argv[0]); |
| 258 | return 1; |
| 259 | } |
| 260 | |
| 261 | if (getcwd(cwd, sizeof(cwd)) == NULL) { |
| 262 | err(PFX "failed to get cwd\n"); |
| 263 | return 1; |
| 264 | } |
| 265 | |
| 266 | ret = make_local_path(root_path, sizeof(root_path), ""); |
| 267 | if (ret != 0) { |
| 268 | err(PFX "failed to generate root path\n"); |
| 269 | return 1; |
| 270 | } |
| 271 | |
| 272 | fout = fopen(out_script, "w"); |
| 273 | if (fout == NULL) { |
| 274 | perror("can't open output script"); |
| 275 | return 1; |
| 276 | } |
| 277 | |
| 278 | fprintf(fout, "#!/bin/sh\n"); |
| 279 | |
| 280 | ret = id_elf(argv[1]); |
| 281 | if (ret == 1 || ret == 2) { |
| 282 | if (cmd_in_blacklist(argv[1])) { |
| 283 | fprintf(stderr, "blacklisted: %s\n", argv[1]); |
| 284 | goto no_in_script; |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | switch (ret) { |
| 289 | case 0: |
| 290 | break; |
| 291 | |
| 292 | case 1: |
| 293 | fprintf(fout, WRAP_APP "%s%s ", root_path, LOADER_STATIC); |
| 294 | dump_args(fout, argc - 1, &argv[1]); |
| 295 | fprintf(fout, "\n"); |
| 296 | goto no_in_script; |
| 297 | |
| 298 | case 2: |
| 299 | fprintf(fout, WRAP_APP "%s%s \"%s\" ", root_path, LOADER_DYNAMIC, root_path); |
| 300 | dump_args(fout, argc - 1, &argv[1]); |
| 301 | fprintf(fout, "\n"); |
| 302 | goto no_in_script; |
| 303 | |
| 304 | default: |
| 305 | return 1; |
| 306 | } |
| 307 | |
| 308 | // assume script |
| 309 | fin = fopen(argv[1], "r"); |
| 310 | if (fin == NULL) |
| 311 | return 1; |
| 312 | |
| 313 | while (1) { |
| 314 | char buff[512], fname[512], *p, *p2; |
| 315 | |
| 316 | p = fgets(buff, sizeof(buff), fin); |
| 317 | if (p == NULL) |
| 318 | break; |
| 319 | p = sskip(p); |
| 320 | |
| 321 | if (p[0] == '#' && p[1] == '!') |
| 322 | continue; |
| 323 | |
| 324 | if (*p == 0) { |
| 325 | fputs("\n", fout); |
| 326 | continue; |
| 327 | } |
| 328 | |
| 329 | // things we are sure we want to pass |
| 330 | if (*p == '#' || strncmp(p, "export ", 7) == 0) |
| 331 | goto pass; |
| 332 | |
| 333 | // hmh.. |
| 334 | if (strncmp(p, "exec ", 5) == 0) |
| 335 | p = sskip(p + 5); |
| 336 | |
| 337 | // blacklist some stuff |
| 338 | if (strncmp(p, "/sbin/", 6) == 0) |
| 339 | p2 = p + 6; |
| 340 | else if (strncmp(p, "/bin/", 5) == 0) |
| 341 | p2 = p + 5; |
| 342 | else |
| 343 | p2 = p; |
| 344 | if (strncmp(p2, "mount ", 6) == 0) { |
| 345 | p2 = sskip(p2 + 6); |
| 346 | // cramfs stuff? |
| 347 | if (strstr(p2, "cramfs")) { |
| 348 | while (*p2 == '-') { |
| 349 | // skip option |
| 350 | p2 = sskip(cskip(p2)); |
| 351 | p2 = sskip(cskip(p2)); |
| 352 | } |
| 353 | if (*p2 == 0) { |
| 354 | err(PFX "cramfs: missing mount file in \"%s\"?\n", p); |
| 355 | continue; |
| 356 | } |
| 357 | p2 = get_arg(fname, sizeof(fname), p2); |
| 358 | if (*p2 == 0) { |
| 359 | err(PFX "cramfs: missing mount point in \"%s\"?\n", p); |
| 360 | continue; |
| 361 | } |
| 362 | get_arg(buff, sizeof(buff), p2); |
| 363 | fprintf(fout, "if [ `ls %s | wc -l` -eq 0 ]; then\n", buff); |
| 364 | fprintf(fout, " rmdir \"%s\"\n", buff); // cramfsck doesn't want it |
| 365 | fprintf(fout, " %stools/cramfsck -x \"%s\" \"%s\"\n", root_path, buff, fname); |
| 366 | fprintf(fout, "fi\n"); |
| 367 | have_cramfs = 1; |
| 368 | } |
| 369 | continue; |
| 370 | } |
| 371 | if (cmd_in_blacklist(p2)) |
| 372 | continue; |
| 373 | |
| 374 | // cd? |
| 375 | if (strncmp(p, "cd ", 3) == 0) { |
| 376 | get_arg(fname, sizeof(fname), p + 3); |
| 377 | if (strncmp(fname, "/usr/gp2x", 9) == 0) |
| 378 | continue; |
| 379 | ret = chdir(fname); |
| 380 | if (ret != 0) { |
| 381 | err("%s: ", fname); |
| 382 | perror(""); |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | // trying to run something from cwd? |
| 387 | if ((p[0] == '.' && p[1] == '/') || *p == '/') { |
| 388 | get_arg(fname, sizeof(fname), p); |
| 389 | p2 = strrchr(fname, '/'); |
| 390 | if (p2 != NULL && strcmp(p2 + 1, "gp2xmenu") == 0) |
| 391 | continue; |
| 392 | |
| 393 | ret = id_elf(fname); |
| 394 | switch (ret) { |
| 395 | case 1: |
| 396 | printf(PFX "prefixing as static: %s", p); |
| 397 | fprintf(fout, WRAP_APP "%s%s ", root_path, LOADER_STATIC); |
| 398 | break; |
| 399 | |
| 400 | case 2: |
| 401 | printf(PFX "prefixing as dynamic: %s", p); |
| 402 | fprintf(fout, WRAP_APP "%s%s \"%s\" ", root_path, LOADER_DYNAMIC, root_path); |
| 403 | break; |
| 404 | |
| 405 | default: |
| 406 | break; |
| 407 | } |
| 408 | } |
| 409 | |
| 410 | pass: |
| 411 | fputs(p, fout); |
| 412 | } |
| 413 | |
| 414 | fclose(fin); |
| 415 | |
| 416 | no_in_script: |
| 417 | if (rerun_gp2xmenu) { |
| 418 | fprintf(fout, "cd %s\n", root_path); |
| 419 | fprintf(fout, "exec %s%s\n", root_path, LAUNCHER); |
| 420 | } |
| 421 | |
| 422 | fclose(fout); |
| 423 | |
| 424 | //msg("starting script..\n"); |
| 425 | if (have_cramfs) { |
| 426 | msg("\nsome files need to be unpacked, this may tike a few minutes.\n"); |
| 427 | #ifdef PND |
| 428 | msg("Please wait at least while SD LED is active.\n"); |
| 429 | #endif |
| 430 | } |
| 431 | system("echo ---; cat /tmp/ginge_conv.sh; echo ---"); |
| 432 | chmod(out_script, S_IRWXU|S_IRWXG|S_IRWXO); |
| 433 | chdir(cwd); |
| 434 | execlp(out_script, out_script, NULL); |
| 435 | perror("run out_script"); |
| 436 | |
| 437 | return 1; |
| 438 | } |
| 439 | |