├── .github └── workflows │ └── payload.yml ├── .gitignore ├── LICENSE ├── Makefile ├── README.md ├── cmd.c ├── cmd.h ├── log.h ├── main.c ├── notify.c └── notify.h /.github/workflows/payload.yml: -------------------------------------------------------------------------------- 1 | name: CI 2 | 3 | on: 4 | push: 5 | paths-ignore: 6 | - "**/*.md" 7 | - "**/*.txt" 8 | pull_request: 9 | paths-ignore: 10 | - "**/*.md" 11 | - "**/*.txt" 12 | workflow_dispatch: 13 | 14 | concurrency: 15 | group: ${{ github.ref }}-${{ github.event_name }} 16 | cancel-in-progress: true 17 | 18 | jobs: 19 | build: 20 | runs-on: ubuntu-latest 21 | steps: 22 | 23 | - name: Checkout SDK 24 | uses: actions/checkout@v3 25 | with: 26 | repository: ps5-payload-dev/sdk 27 | path: sdk 28 | 29 | - name: Setup SDK 30 | working-directory: sdk 31 | run: | 32 | sudo apt update 33 | sudo apt install clang-18 lld-18 34 | make DESTDIR=${{ runner.tool_cache }}/ps5-payload-sdk clean install 35 | echo PS5_PAYLOAD_SDK=${{ runner.tool_cache }}/ps5-payload-sdk >> $GITHUB_ENV 36 | 37 | - name: Checkout Payload 38 | uses: actions/checkout@v3 39 | 40 | - name: Build Payload 41 | run: | 42 | make clean all 43 | zip -r Payload.zip ftpsrv.elf 44 | 45 | - name: Upload Payload 46 | uses: actions/upload-artifact@v4 47 | with: 48 | name: Payload 49 | path: Payload.zip 50 | if-no-files-found: error 51 | 52 | release: 53 | needs: build 54 | permissions: 55 | contents: write 56 | 57 | if: startsWith(github.ref, 'refs/tags/') 58 | runs-on: ubuntu-latest 59 | steps: 60 | - name: Download artifacts 61 | uses: actions/download-artifact@v4 62 | with: 63 | name: Payload 64 | path: . 65 | 66 | - name: Create GitHub Release (pre-release) 67 | uses: softprops/action-gh-release@v2 68 | with: 69 | tag_name: ${{ github.ref_name }} 70 | prerelease: true 71 | files: Payload.zip 72 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | *~ 2 | *.elf 3 | *.o 4 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /Makefile: -------------------------------------------------------------------------------- 1 | # Copyright (C) 2023 John Törnblom 2 | # 3 | # This file is free software; you can redistribute it and/or modify it 4 | # under the terms of the GNU General Public License as published by 5 | # the Free Software Foundation; either version 3 of the License, or 6 | # (at your option) any later version. 7 | # 8 | # This program is distributed in the hope that it will be useful, but 9 | # WITHOUT ANY WARRANTY; without even the implied warranty of 10 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 11 | # General Public License for more details. 12 | # 13 | # You should have received a copy of the GNU General Public License 14 | # along with this program; see the file COPYING. If not see 15 | # . 16 | 17 | PS5_HOST ?= ps5 18 | PS5_PORT ?= 9021 19 | 20 | ifdef PS5_PAYLOAD_SDK 21 | include $(PS5_PAYLOAD_SDK)/toolchain/prospero.mk 22 | else 23 | $(error PS5_PAYLOAD_SDK is undefined) 24 | endif 25 | 26 | ELF := ftpsrv.elf 27 | 28 | CFLAGS := -Wall -Werror 29 | 30 | all: $(ELF) 31 | 32 | $(ELF): main.c cmd.c notify.c 33 | $(CC) $(CFLAGS) -o $@ $^ 34 | 35 | clean: 36 | rm -f $(ELF) 37 | 38 | test: $(ELF) 39 | $(PS5_DEPLOY) -h $(PS5_HOST) -p $(PS5_PORT) $^ 40 | 41 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # ps5-payload-ftpsrv 2 | This is a simple FTP server that can be executed on a Playstation 5 that has 3 | been jailbroken via the [BD-J][bdj] or the [webkit][webkit] entry points. 4 | 5 | ## Quick-start 6 | To deploy ps5-payload-ftpsrv, first make sure [ps5-payload-elfldr][elfldr] is 7 | running, then load the payload as follows: 8 | 9 | ```console 10 | john@localhost:~$ export PS5_HOST=ps5 11 | john@localhost:~$ wget -q -O - https://github.com/ps5-payload-dev/ftpsrv/releases/latest/download/Payload.zip | gunzip -c -d | nc -q0 $PS5_HOST 9021 12 | ``` 13 | 14 | ## Features 15 | Client software that has been testing include gFTP, Filezilla, curl, and Thunar. 16 | Furthermore, the payload supports a couple of custom SITE commands specifically 17 | for the PS5 (executed without prepending SITE). In particular: 18 | - KILL - kill the FTP server. 19 | - MTRW - remount /system and /system_ex with write permissions. 20 | 21 | ## Building 22 | Assuming you have the [ps5-payload-sdk][sdk] installed on a POSIX machine, 23 | the FTP server can be compiled using the following two commands: 24 | ```console 25 | john@localhost:ps5-payload-dev/ftpsrv$ export PS5_PAYLOAD_SDK=/opt/ps5-payload-sdk 26 | john@localhost:ps5-payload-dev/ftpsrv$ make 27 | ``` 28 | 29 | ## Reporting Bugs 30 | If you encounter problems with ps5-payload-ftpsrv, please [file a github issue][issues]. 31 | If you plan on sending pull requests which affect more than a few lines of code, 32 | please file an issue before you start to work on you changes. This will allow us 33 | to discuss the solution properly before you commit time and effort. 34 | 35 | ## License 36 | ps5-payload-ftpsrv is licensed under the GPLv3+. 37 | 38 | [bdj]: https://github.com/john-tornblom/bdj-sdk 39 | [sdk]: https://github.com/ps5-payload-dev/sdk 40 | [webkit]: https://github.com/Cryptogenic/PS5-IPV6-Kernel-Exploit 41 | [elfldr]: https://github.com/ps5-payload-dev/elfldr 42 | [issues]: https://github.com/ps5-payload-dev/ftpsrv/issues/new 43 | -------------------------------------------------------------------------------- /cmd.c: -------------------------------------------------------------------------------- 1 | /* Copyright (C) 2023 John Törnblom 2 | 3 | This program is free software; you can redistribute it and/or modify it 4 | under the terms of the GNU General Public License as published by the 5 | Free Software Foundation; either version 3, or (at your option) any 6 | later version. 7 | 8 | This program is distributed in the hope that it will be useful, 9 | but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | GNU General Public License for more details. 12 | 13 | You should have received a copy of the GNU General Public License 14 | along with this program; see the file COPYING. If not, see 15 | . */ 16 | 17 | #include 18 | #include 19 | #include 20 | #include 21 | #include 22 | #include 23 | #include 24 | #include 25 | #include 26 | #include 27 | #include 28 | #include 29 | #include 30 | #include 31 | #include 32 | 33 | #include 34 | #include 35 | 36 | #include "cmd.h" 37 | #include "log.h" 38 | 39 | 40 | #define IOVEC_ENTRY(x) {x ? x : 0, \ 41 | x ? strlen(x)+1 : 0} 42 | #define IOVEC_SIZE(x) (sizeof(x) / sizeof(struct iovec)) 43 | 44 | 45 | #ifdef __PROSPERO__ 46 | struct tm *localtime_s(const time_t *t, struct tm* tm); 47 | #define LOCALTIME_R(t, tm) localtime_s(t, tm) 48 | #else 49 | #define LOCALTIME_R(t, tm) localtime_r(t, tm) 50 | #endif 51 | 52 | 53 | /** 54 | * Create a string representation of a file mode. 55 | **/ 56 | static void 57 | ftp_mode_string(mode_t mode, char *buf) { 58 | char c, d; 59 | int i, bit; 60 | 61 | buf[10] = 0; 62 | for(i=0; i<9; i++) { 63 | bit = mode & (1<data_addr.sin_port) { 92 | if(connect(env->data_fd, (struct sockaddr*)&env->data_addr, 93 | sizeof(env->data_addr))) { 94 | return -1; 95 | } 96 | } else { 97 | if((env->data_fd=accept(env->passive_fd, (struct sockaddr*)&data_addr, 98 | &addr_len)) < 0) { 99 | return -1; 100 | } 101 | } 102 | 103 | return 0; 104 | } 105 | 106 | 107 | /** 108 | * Transmit a formatted string via an existing data connection. 109 | **/ 110 | static int 111 | ftp_data_printf(ftp_env_t *env, const char *fmt, ...) { 112 | char buf[0x1000]; 113 | size_t len = 0; 114 | va_list args; 115 | 116 | va_start(args, fmt); 117 | vsnprintf(buf, sizeof(buf), fmt, args); 118 | va_end(args); 119 | 120 | len = strlen(buf); 121 | if(write(env->data_fd, buf, len) != len) { 122 | return -1; 123 | } 124 | 125 | return 0; 126 | } 127 | 128 | 129 | /** 130 | * Read data from an existing data connection. 131 | **/ 132 | static int 133 | ftp_data_read(ftp_env_t *env, void *buf, size_t count) { 134 | return recv(env->data_fd, buf, count, 0); 135 | } 136 | 137 | 138 | /** 139 | * Close an existing data connection. 140 | **/ 141 | static int 142 | ftp_data_close(ftp_env_t *env) { 143 | if(!close(env->data_fd)) { 144 | return 0; 145 | } 146 | return -1; 147 | } 148 | 149 | 150 | /** 151 | * Transmit a formatted string via an active connection. 152 | **/ 153 | static int 154 | ftp_active_printf(ftp_env_t *env, const char *fmt, ...) { 155 | char buf[0x1000]; 156 | size_t len = 0; 157 | va_list args; 158 | 159 | va_start(args, fmt); 160 | vsnprintf(buf, sizeof(buf), fmt, args); 161 | va_end(args); 162 | 163 | len = strlen(buf); 164 | 165 | if(write(env->active_fd, buf, len) != len) { 166 | return -1; 167 | } 168 | 169 | return 0; 170 | } 171 | 172 | 173 | /** 174 | * Transmit an errno string via an active connection. 175 | **/ 176 | static int 177 | ftp_perror(ftp_env_t *env) { 178 | char buf[255]; 179 | 180 | if(strerror_r(errno, buf, sizeof(buf))) { 181 | strncpy(buf, "Unknown error", sizeof(buf)); 182 | } 183 | 184 | return ftp_active_printf(env, "550 %s\r\n", buf); 185 | } 186 | 187 | 188 | /** 189 | * Resolve a path to its absolute path. 190 | **/ 191 | static void 192 | ftp_abspath(ftp_env_t *env, char *abspath, const char *path) { 193 | char buf[PATH_MAX+1]; 194 | 195 | if(path[0] != '/') { 196 | snprintf(buf, sizeof(buf), "%s/%s", env->cwd, path); 197 | strncpy(abspath, buf, PATH_MAX); 198 | } else { 199 | strncpy(abspath, path, PATH_MAX); 200 | } 201 | } 202 | 203 | 204 | /** 205 | * Enter passive mode. 206 | **/ 207 | int 208 | ftp_cmd_PASV(ftp_env_t *env, const char* arg) { 209 | socklen_t sockaddr_len = sizeof(struct sockaddr_in); 210 | struct sockaddr_in sockaddr; 211 | uint32_t addr = 0; 212 | uint16_t port = 0; 213 | 214 | if(getsockname(env->active_fd, (struct sockaddr*)&sockaddr, &sockaddr_len)) { 215 | return ftp_perror(env); 216 | } 217 | addr = sockaddr.sin_addr.s_addr; 218 | 219 | if(env->passive_fd > 0) { 220 | close(env->passive_fd); 221 | } 222 | 223 | if((env->passive_fd=socket(AF_INET, SOCK_STREAM, 0)) < 0) { 224 | return ftp_perror(env); 225 | } 226 | 227 | memset(&sockaddr, 0, sockaddr_len); 228 | sockaddr.sin_family = AF_INET; 229 | sockaddr.sin_addr.s_addr = htonl(INADDR_ANY); 230 | sockaddr.sin_port = htons(0); 231 | 232 | if(bind(env->passive_fd, (struct sockaddr*)&sockaddr, sockaddr_len) != 0) { 233 | int ret = ftp_perror(env); 234 | close(env->passive_fd); 235 | return ret; 236 | } 237 | 238 | if(listen(env->passive_fd, 5) != 0) { 239 | int ret = ftp_perror(env); 240 | close(env->passive_fd); 241 | return ret; 242 | } 243 | 244 | if(getsockname(env->passive_fd, (struct sockaddr*)&sockaddr, &sockaddr_len)) { 245 | int ret = ftp_perror(env); 246 | close(env->passive_fd); 247 | return ret; 248 | } 249 | port = sockaddr.sin_port; 250 | 251 | return ftp_active_printf(env, "227 Entering Passive Mode (%hhu,%hhu,%hhu,%hhu,%hhu,%hhu).\r\n", 252 | (addr >> 0) & 0xFF, 253 | (addr >> 8) & 0xFF, 254 | (addr >> 16) & 0xFF, 255 | (addr >> 24) & 0xFF, 256 | (port >> 0) & 0xFF, 257 | (port >> 8) & 0xFF); 258 | } 259 | 260 | 261 | /** 262 | * Change the working directory to its parent. 263 | **/ 264 | int 265 | ftp_cmd_CDUP(ftp_env_t *env, const char* arg) { 266 | int pos = -1; 267 | 268 | for(size_t i=0; icwd); i++) { 269 | if(!env->cwd[i]) { 270 | break; 271 | } else if(env->cwd[i] == '/') { 272 | pos = i; 273 | } 274 | } 275 | 276 | if(pos > 0) { 277 | env->cwd[pos] = '\0'; 278 | } 279 | 280 | return ftp_active_printf(env, "250 OK\r\n"); 281 | } 282 | 283 | 284 | /** 285 | * 286 | **/ 287 | int 288 | ftp_cmd_CHMOD(ftp_env_t *env, const char* arg) { 289 | char pathbuf[PATH_MAX]; 290 | mode_t mode = 0; 291 | char* ptr; 292 | 293 | if(!arg[0] || !(ptr=strstr(arg, " "))) { 294 | return ftp_active_printf(env, "501 Usage: CHMOD \r\n"); 295 | } 296 | 297 | mode = strtol(arg, 0, 8); 298 | ftp_abspath(env, pathbuf, ptr+1); 299 | 300 | if(chmod(pathbuf, mode)) { 301 | return ftp_perror(env); 302 | } 303 | 304 | return ftp_active_printf(env, "200 OK\r\n"); 305 | } 306 | 307 | 308 | /** 309 | * Change the working directory. 310 | **/ 311 | int 312 | ftp_cmd_CWD(ftp_env_t *env, const char* arg) { 313 | char pathbuf[PATH_MAX]; 314 | struct stat st; 315 | 316 | if(!arg[0]) { 317 | return ftp_active_printf(env, "501 Usage: CWD \r\n"); 318 | } 319 | 320 | ftp_abspath(env, pathbuf, arg); 321 | if(stat(pathbuf, &st)) { 322 | return ftp_perror(env); 323 | } 324 | 325 | if(!S_ISDIR(st.st_mode)) { 326 | return ftp_active_printf(env, "550 No such directory\r\n"); 327 | } 328 | 329 | snprintf(env->cwd, sizeof(env->cwd), "%s", pathbuf); 330 | 331 | return ftp_active_printf(env, "250 OK\r\n"); 332 | } 333 | 334 | 335 | /** 336 | * Delete a given file. 337 | **/ 338 | int 339 | ftp_cmd_DELE(ftp_env_t *env, const char* arg) { 340 | char pathbuf[PATH_MAX]; 341 | 342 | if(!arg[0]) { 343 | return ftp_active_printf(env, "501 Usage: DELE \r\n"); 344 | } 345 | 346 | ftp_abspath(env, pathbuf, arg); 347 | if(remove(pathbuf)) { 348 | return ftp_perror(env); 349 | } 350 | 351 | return ftp_active_printf(env, "226 File deleted\r\n"); 352 | } 353 | 354 | 355 | /** 356 | * Trasfer a list of files and folder. 357 | **/ 358 | int 359 | ftp_cmd_LIST(ftp_env_t *env, const char* arg) { 360 | char pathbuf[PATH_MAX+256+2]; 361 | struct dirent *ent; 362 | const char *p = env->cwd; 363 | struct stat statbuf; 364 | char timebuf[20]; 365 | char modebuf[20]; 366 | struct tm tm; 367 | DIR *dir; 368 | 369 | if(arg[0] && arg[0] != '-') { 370 | p = arg; 371 | } 372 | 373 | if(!(dir=opendir(p))) { 374 | return ftp_perror(env); 375 | } 376 | 377 | if(ftp_data_open(env)) { 378 | return ftp_perror(env); 379 | } 380 | 381 | ftp_active_printf(env, "150 Opening data transfer\r\n"); 382 | 383 | while((ent=readdir(dir))) { 384 | if(p[0] == '/') { 385 | snprintf(pathbuf, sizeof(pathbuf), "%s/%s", p, ent->d_name); 386 | } else { 387 | snprintf(pathbuf, sizeof(pathbuf), "/%s/%s/%s", env->cwd, p, 388 | ent->d_name); 389 | } 390 | 391 | if(stat(pathbuf, &statbuf) != 0) { 392 | continue; 393 | } 394 | 395 | ftp_mode_string(statbuf.st_mode, modebuf); 396 | LOCALTIME_R((const time_t *)&(statbuf.st_ctim), &tm); 397 | strftime(timebuf, sizeof(timebuf), "%b %d %H:%M", &tm); 398 | ftp_data_printf(env, "%s %lu %lu %lu %llu %s %s\r\n", modebuf, 399 | statbuf.st_nlink, statbuf.st_uid, statbuf.st_gid, 400 | statbuf.st_size, timebuf, ent->d_name); 401 | } 402 | 403 | if(ftp_data_close(env)) { 404 | int ret = ftp_perror(env); 405 | closedir(dir); 406 | return ret; 407 | } 408 | 409 | if(closedir(dir)) { 410 | return ftp_perror(env); 411 | } 412 | 413 | return ftp_active_printf(env, "226 Transfer complete\r\n"); 414 | } 415 | 416 | 417 | /** 418 | * Create a new directory at a given path. 419 | **/ 420 | int 421 | ftp_cmd_MKD(ftp_env_t *env, const char* arg) { 422 | char pathbuf[PATH_MAX]; 423 | 424 | if(!arg[0]) { 425 | return ftp_active_printf(env, "501 Usage: MKD \r\n"); 426 | } 427 | 428 | ftp_abspath(env, pathbuf, arg); 429 | if(mkdir(pathbuf, 0777)) { 430 | return ftp_perror(env); 431 | } 432 | 433 | return ftp_active_printf(env, "226 Directory created\r\n"); 434 | } 435 | 436 | 437 | /** 438 | * No operation. 439 | **/ 440 | int 441 | ftp_cmd_NOOP(ftp_env_t *env, const char* arg) { 442 | return ftp_active_printf(env, "200 NOOP OK\r\n"); 443 | } 444 | 445 | 446 | /** 447 | * Establish a data connection with client. 448 | **/ 449 | int 450 | ftp_cmd_PORT(ftp_env_t *env, const char* arg) { 451 | uint8_t addr[6]; 452 | uint64_t s_addr; 453 | uint16_t port; 454 | 455 | if(sscanf(arg, "%hhu,%hhu,%hhu,%hhu,%hhu,%hhu", 456 | addr, addr+1, addr+2, addr+3, addr+4, addr+5) != 6) { 457 | return ftp_active_printf(env, "501 Usage: PORT \r\n"); 458 | } 459 | 460 | if((env->data_fd=socket(AF_INET, SOCK_STREAM, 0)) < 0) { 461 | return ftp_perror(env); 462 | } 463 | 464 | s_addr = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0]; 465 | port = (addr[5] << 8) | addr[4]; 466 | 467 | env->data_addr.sin_family = AF_INET; 468 | env->data_addr.sin_addr.s_addr = s_addr; 469 | env->data_addr.sin_port = port; 470 | 471 | return ftp_active_printf(env, "200 PORT command successful.\r\n"); 472 | } 473 | 474 | 475 | /** 476 | * Print working directory. 477 | **/ 478 | int 479 | ftp_cmd_PWD(ftp_env_t *env, const char* arg) { 480 | return ftp_active_printf(env, "257 \"%s\"\r\n", env->cwd); 481 | } 482 | 483 | 484 | /** 485 | * Disconnect client. 486 | **/ 487 | int 488 | ftp_cmd_QUIT(ftp_env_t *env, const char* arg) { 489 | ftp_active_printf(env, "221 Goodbye\r\n"); 490 | return -1; 491 | } 492 | 493 | 494 | /** 495 | * Mark the offset to start from in a future file transer. 496 | **/ 497 | int 498 | ftp_cmd_REST(ftp_env_t *env, const char* arg) { 499 | if(!arg[0]) { 500 | return ftp_active_printf(env, "501 Usage: REST \r\n"); 501 | } 502 | 503 | env->data_offset = atol(arg); 504 | 505 | return ftp_active_printf(env, "350 REST OK\r\n"); 506 | } 507 | 508 | 509 | /** 510 | * Retreive data from a given file. 511 | **/ 512 | int 513 | ftp_cmd_RETR(ftp_env_t *env, const char* arg) { 514 | char pathbuf[PATH_MAX]; 515 | uint8_t buf[PAGE_SIZE]; 516 | struct stat st; 517 | int err = 0; 518 | int len; 519 | int fd; 520 | 521 | if(!arg[0]) { 522 | return ftp_active_printf(env, "501 Usage: RETR \r\n"); 523 | } 524 | 525 | ftp_abspath(env, pathbuf, arg); 526 | if(stat(pathbuf, &st)) { 527 | return ftp_perror(env); 528 | } 529 | 530 | if(S_ISDIR(st.st_mode)) { 531 | return ftp_active_printf(env, "550 Not a file\r\n"); 532 | } 533 | 534 | if((fd=open(pathbuf, O_RDONLY, 0)) < 0) { 535 | return ftp_active_printf(env, "550 %s\r\n", strerror(errno)); 536 | } 537 | 538 | if(ftp_active_printf(env, "150 Opening data transfer\r\n")) { 539 | close(fd); 540 | return -1; 541 | } 542 | 543 | if(ftp_data_open(env)) { 544 | err = ftp_perror(env); 545 | close(fd); 546 | return err; 547 | } 548 | 549 | while((len=read(fd, buf, sizeof(buf))) != 0) { 550 | if(len < 0 || len != write(env->data_fd, buf, len)) { 551 | err = ftp_perror(env); 552 | ftp_data_close(env); 553 | close(fd); 554 | return err; 555 | } 556 | } 557 | 558 | close(fd); 559 | 560 | if(ftp_data_close(env)) { 561 | return ftp_perror(env); 562 | } 563 | 564 | return ftp_active_printf(env, "226 Transfer completed\r\n"); 565 | } 566 | 567 | 568 | /** 569 | * Remove a directory. 570 | **/ 571 | int 572 | ftp_cmd_RMD(ftp_env_t *env, const char* arg) { 573 | char pathbuf[PATH_MAX]; 574 | 575 | if(!arg[0]) { 576 | return ftp_active_printf(env, "501 Usage: RMD \r\n"); 577 | } 578 | 579 | ftp_abspath(env, pathbuf, arg); 580 | if(rmdir(pathbuf)) { 581 | return ftp_perror(env); 582 | } 583 | 584 | return ftp_active_printf(env, "226 Directory deleted\r\n"); 585 | } 586 | 587 | 588 | /** 589 | * Specify a path that will later be renamed by the RNTO command. 590 | **/ 591 | int 592 | ftp_cmd_RNFR(ftp_env_t *env, const char* arg) { 593 | struct stat st; 594 | 595 | if(!arg[0]) { 596 | return ftp_active_printf(env, "501 Usage: RNFR \r\n"); 597 | } 598 | 599 | ftp_abspath(env, env->rename_path, arg); 600 | if(stat(env->rename_path, &st)) { 601 | return ftp_perror(env); 602 | } 603 | 604 | return ftp_active_printf(env, "350 Awaiting new name\r\n"); 605 | } 606 | 607 | 608 | /** 609 | * Rename a path previously specified by the RNFR command. 610 | **/ 611 | int 612 | ftp_cmd_RNTO(ftp_env_t *env, const char* arg) { 613 | char pathbuf[PATH_MAX]; 614 | struct stat st; 615 | 616 | if(!arg[0]) { 617 | return ftp_active_printf(env, "501 Usage: RNTO \r\n"); 618 | } 619 | 620 | if(stat(env->rename_path, &st)) { 621 | return ftp_perror(env); 622 | } 623 | 624 | ftp_abspath(env, pathbuf, arg); 625 | if(rename(env->rename_path, pathbuf)) { 626 | return ftp_perror(env); 627 | } 628 | 629 | return ftp_active_printf(env, "226 Path renamed\r\n"); 630 | } 631 | 632 | 633 | /** 634 | * Obtain the size of a given file. 635 | **/ 636 | int 637 | ftp_cmd_SIZE(ftp_env_t *env, const char* arg) { 638 | char pathbuf[PATH_MAX]; 639 | struct stat st; 640 | 641 | if(!arg[0]) { 642 | return ftp_active_printf(env, "501 Usage: SIZE \r\n"); 643 | } 644 | 645 | ftp_abspath(env, pathbuf, arg); 646 | if(stat(pathbuf, &st)) { 647 | return ftp_perror(env); 648 | } 649 | 650 | return ftp_active_printf(env, "213 %" PRIu64 "\r\n", st.st_size); 651 | } 652 | 653 | 654 | /** 655 | * Store recieved data in a given file. 656 | **/ 657 | int 658 | ftp_cmd_STOR(ftp_env_t *env, const char* arg) { 659 | off_t off = env->data_offset; 660 | uint8_t readbuf[0x4000]; 661 | char pathbuf[PATH_MAX]; 662 | int err = 0; 663 | size_t len; 664 | int fd; 665 | 666 | env->data_offset = 0; 667 | 668 | if(!arg[0]) { 669 | return ftp_active_printf(env, "501 Usage: STOR \r\n"); 670 | } 671 | 672 | ftp_abspath(env, pathbuf, arg); 673 | if((fd=open(pathbuf, O_CREAT | O_WRONLY, 0777)) < 0) { 674 | return ftp_perror(env); 675 | } 676 | 677 | if(lseek(fd, off, SEEK_CUR) < 0) { 678 | err = ftp_perror(env); 679 | close(fd); 680 | return err; 681 | } 682 | 683 | if(ftp_active_printf(env, "150 Opening data transfer\r\n")) { 684 | close(fd); 685 | return -1; 686 | } 687 | 688 | if(ftp_data_open(env)) { 689 | err = ftp_perror(env); 690 | close(fd); 691 | return err; 692 | } 693 | 694 | while((len=ftp_data_read(env, readbuf, sizeof(readbuf)))) { 695 | if(write(fd, readbuf, len) != len) { 696 | err = ftp_perror(env); 697 | ftp_data_close(env); 698 | close(fd); 699 | return err; 700 | } 701 | off += len; 702 | } 703 | 704 | if(ftruncate(fd, off)) { 705 | err = ftp_perror(env); 706 | ftp_data_close(env); 707 | close(fd); 708 | return err; 709 | } 710 | 711 | close(fd); 712 | if(ftp_data_close(env)) { 713 | return ftp_perror(env); 714 | } 715 | 716 | return ftp_active_printf(env, "226 Data transfer complete\r\n"); 717 | } 718 | 719 | 720 | /** 721 | * Append to an existing file. 722 | **/ 723 | int 724 | ftp_cmd_APPE(ftp_env_t *env, const char* arg) { 725 | char pathbuf[PATH_MAX]; 726 | struct stat statbuf; 727 | 728 | if(!arg[0]) { 729 | return ftp_active_printf(env, "501 Usage: APPE \r\n"); 730 | } 731 | 732 | if(!env->data_offset) { 733 | ftp_abspath(env, pathbuf, arg); 734 | if(stat(pathbuf, &statbuf)) { 735 | return ftp_perror(env); 736 | } 737 | env->data_offset = statbuf.st_size; 738 | } 739 | 740 | return ftp_cmd_STOR(env, arg); 741 | } 742 | 743 | 744 | /** 745 | * Return system type. 746 | **/ 747 | int 748 | ftp_cmd_SYST(ftp_env_t *env, const char* arg) { 749 | return ftp_active_printf(env, "215 UNIX Type: L8\r\n"); 750 | } 751 | 752 | 753 | /** 754 | * Sets the transfer mode (ASCII or Binary). 755 | **/ 756 | int 757 | ftp_cmd_TYPE(ftp_env_t *env, const char* arg) { 758 | switch(arg[0]) { 759 | case 'A': 760 | case 'I': 761 | env->type = arg[0]; 762 | return ftp_active_printf(env, "200 Type set to %c\r\n", env->type); 763 | } 764 | 765 | return ftp_active_printf(env, "501 Invalid argument to TYPE\r\n"); 766 | } 767 | 768 | 769 | /** 770 | * Authenticate user. 771 | **/ 772 | int 773 | ftp_cmd_USER(ftp_env_t *env, const char* arg) { 774 | return ftp_active_printf(env, "230 User logged in\r\n"); 775 | } 776 | 777 | 778 | /** 779 | * Custom command that terminates the server. 780 | **/ 781 | int 782 | ftp_cmd_KILL(ftp_env_t *env, const char* arg) { 783 | FTP_LOG_PUTS("Server killed"); 784 | exit(EXIT_SUCCESS); 785 | return -1; 786 | } 787 | 788 | 789 | /** 790 | * Unsupported command. 791 | **/ 792 | int 793 | ftp_cmd_unavailable(ftp_env_t *env, const char* arg) { 794 | return ftp_active_printf(env, "502 Command not implemented\r\n"); 795 | } 796 | 797 | 798 | /** 799 | * Unknown command. 800 | **/ 801 | int 802 | ftp_cmd_unknown(ftp_env_t *env, const char* arg) { 803 | return ftp_active_printf(env, "502 Command not recognized\r\n"); 804 | } 805 | 806 | 807 | 808 | /** 809 | * Remount read-only mount points with write permissions. 810 | **/ 811 | int 812 | ftp_cmd_MTRW(ftp_env_t *env, const char* arg) { 813 | struct iovec iov_sys[] = { 814 | IOVEC_ENTRY("from"), IOVEC_ENTRY("/dev/ssd0.system"), 815 | IOVEC_ENTRY("fspath"), IOVEC_ENTRY("/system"), 816 | IOVEC_ENTRY("fstype"), IOVEC_ENTRY("exfatfs"), 817 | IOVEC_ENTRY("large"), IOVEC_ENTRY("yes"), 818 | IOVEC_ENTRY("timezone"), IOVEC_ENTRY("static"), 819 | IOVEC_ENTRY("async"), IOVEC_ENTRY(NULL), 820 | IOVEC_ENTRY("ignoreacl"), IOVEC_ENTRY(NULL), 821 | }; 822 | 823 | struct iovec iov_sysex[] = { 824 | IOVEC_ENTRY("from"), IOVEC_ENTRY("/dev/ssd0.system_ex"), 825 | IOVEC_ENTRY("fspath"), IOVEC_ENTRY("/system_ex"), 826 | IOVEC_ENTRY("fstype"), IOVEC_ENTRY("exfatfs"), 827 | IOVEC_ENTRY("large"), IOVEC_ENTRY("yes"), 828 | IOVEC_ENTRY("timezone"), IOVEC_ENTRY("static"), 829 | IOVEC_ENTRY("async"), IOVEC_ENTRY(NULL), 830 | IOVEC_ENTRY("ignoreacl"), IOVEC_ENTRY(NULL), 831 | }; 832 | 833 | if(syscall(SYS_nmount, iov_sys, IOVEC_SIZE(iov_sys), MNT_UPDATE)) { 834 | return ftp_perror(env); 835 | } 836 | 837 | if(syscall(SYS_nmount, iov_sysex, IOVEC_SIZE(iov_sysex), MNT_UPDATE)) { 838 | return ftp_perror(env); 839 | } 840 | 841 | return ftp_active_printf(env, "226 /system and /system_ex remounted\r\n"); 842 | } 843 | 844 | 845 | /* 846 | Local Variables: 847 | c-file-style: "gnu" 848 | End: 849 | */ 850 | -------------------------------------------------------------------------------- /cmd.h: -------------------------------------------------------------------------------- 1 | /* Copyright (C) 2023 John Törnblom 2 | 3 | This program is free software; you can redistribute it and/or modify it 4 | under the terms of the GNU General Public License as published by the 5 | Free Software Foundation; either version 3, or (at your option) any 6 | later version. 7 | 8 | This program is distributed in the hope that it will be useful, 9 | but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | GNU General Public License for more details. 12 | 13 | You should have received a copy of the GNU General Public License 14 | along with this program; see the file COPYING. If not, see 15 | . */ 16 | 17 | #pragma once 18 | 19 | #include 20 | #include 21 | #include 22 | #include 23 | 24 | 25 | /** 26 | * Data structure that captures the current state of a client. 27 | **/ 28 | typedef struct ftp_env { 29 | int data_fd; 30 | int active_fd; 31 | int passive_fd; 32 | char cwd[PATH_MAX]; 33 | 34 | char type; 35 | off_t data_offset; 36 | char rename_path[PATH_MAX]; 37 | struct sockaddr_in data_addr; 38 | } ftp_env_t; 39 | 40 | 41 | /** 42 | * Callback function prototype for ftp commands. 43 | **/ 44 | typedef int (ftp_command_fn_t)(ftp_env_t* env, const char* arg); 45 | 46 | 47 | /** 48 | * Standard FTP commands. 49 | **/ 50 | int ftp_cmd_APPE(ftp_env_t *env, const char* arg); 51 | int ftp_cmd_CDUP(ftp_env_t *env, const char* arg); 52 | int ftp_cmd_CWD (ftp_env_t *env, const char* arg); 53 | int ftp_cmd_DELE(ftp_env_t *env, const char* arg); 54 | int ftp_cmd_LIST(ftp_env_t *env, const char* arg); 55 | int ftp_cmd_MKD (ftp_env_t *env, const char* arg); 56 | int ftp_cmd_NOOP(ftp_env_t *env, const char* arg); 57 | int ftp_cmd_PASV(ftp_env_t *env, const char* arg); 58 | int ftp_cmd_PORT(ftp_env_t *env, const char* arg); 59 | int ftp_cmd_PWD (ftp_env_t *env, const char* arg); 60 | int ftp_cmd_QUIT(ftp_env_t *env, const char* arg); 61 | int ftp_cmd_REST(ftp_env_t *env, const char* arg); 62 | int ftp_cmd_RETR(ftp_env_t *env, const char* arg); 63 | int ftp_cmd_RMD (ftp_env_t *env, const char* arg); 64 | int ftp_cmd_RNFR(ftp_env_t *env, const char* arg); 65 | int ftp_cmd_RNTO(ftp_env_t *env, const char* arg); 66 | int ftp_cmd_SIZE(ftp_env_t *env, const char* arg); 67 | int ftp_cmd_STOR(ftp_env_t *env, const char* arg); 68 | int ftp_cmd_SYST(ftp_env_t *env, const char* arg); 69 | int ftp_cmd_TYPE(ftp_env_t *env, const char* arg); 70 | int ftp_cmd_USER(ftp_env_t *env, const char* arg); 71 | 72 | 73 | /** 74 | * Custom FTP commands. 75 | **/ 76 | int ftp_cmd_KILL(ftp_env_t *env, const char* arg); 77 | int ftp_cmd_MTRW(ftp_env_t *env, const char* arg); 78 | int ftp_cmd_CHMOD(ftp_env_t *env, const char* arg); 79 | 80 | /** 81 | * Error responses to unknown/unavailable FTP commands. 82 | **/ 83 | int ftp_cmd_unavailable(ftp_env_t *env, const char* arg); 84 | int ftp_cmd_unknown(ftp_env_t *env, const char* arg); 85 | -------------------------------------------------------------------------------- /log.h: -------------------------------------------------------------------------------- 1 | /* Copyright (C) 2024 John Törnblom 2 | 3 | This program is free software; you can redistribute it and/or modify it 4 | under the terms of the GNU General Public License as published by the 5 | Free Software Foundation; either version 3, or (at your option) any 6 | later version. 7 | 8 | This program is distributed in the hope that it will be useful, 9 | but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | GNU General Public License for more details. 12 | 13 | You should have received a copy of the GNU General Public License 14 | along with this program; see the file COPYING. If not, see 15 | . */ 16 | 17 | #pragma once 18 | 19 | #include 20 | #include 21 | 22 | 23 | /** 24 | * Log to stdout and klog 25 | **/ 26 | #define FTP_LOG_PUTS(s) { \ 27 | puts(s); \ 28 | klog_puts(s); \ 29 | } 30 | 31 | #define FTP_LOG_PRINTF(s, ...) { \ 32 | printf(s, __VA_ARGS__); \ 33 | klog_printf(s, __VA_ARGS__); \ 34 | } 35 | 36 | #define FTP_LOG_PERROR(s) { \ 37 | printf("%s:%d:%s: %s\n", __FILE__, __LINE__, s, strerror(errno)); \ 38 | klog_printf("%s:%d:%s: %s\n", __FILE__, __LINE__, s, strerror(errno)); \ 39 | } 40 | -------------------------------------------------------------------------------- /main.c: -------------------------------------------------------------------------------- 1 | /* Copyright (C) 2023 John Törnblom 2 | 3 | This program is free software; you can redistribute it and/or modify it 4 | under the terms of the GNU General Public License as published by the 5 | Free Software Foundation; either version 3, or (at your option) any 6 | later version. 7 | 8 | This program is distributed in the hope that it will be useful, 9 | but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | GNU General Public License for more details. 12 | 13 | You should have received a copy of the GNU General Public License 14 | along with this program; see the file COPYING. If not, see 15 | . */ 16 | 17 | #include 18 | #include 19 | #include 20 | #include 21 | #include 22 | #include 23 | #include 24 | #include 25 | #include 26 | #include 27 | #include 28 | #include 29 | #include 30 | 31 | #include 32 | #include 33 | #include 34 | 35 | #include 36 | 37 | #include "cmd.h" 38 | #include "log.h" 39 | #include "notify.h" 40 | 41 | 42 | /** 43 | * Map names of commands to function entry points. 44 | **/ 45 | typedef struct ftp_command { 46 | const char *name; 47 | ftp_command_fn_t *func; 48 | } ftp_command_t; 49 | 50 | 51 | /** 52 | * Lookup table for FTP commands. 53 | **/ 54 | static ftp_command_t commands[] = { 55 | {"APPE", ftp_cmd_APPE}, 56 | {"CDUP", ftp_cmd_CDUP}, 57 | {"CWD", ftp_cmd_CWD}, 58 | {"DELE", ftp_cmd_DELE}, 59 | {"LIST", ftp_cmd_LIST}, 60 | {"MKD", ftp_cmd_MKD}, 61 | {"NOOP", ftp_cmd_NOOP}, 62 | {"PASV", ftp_cmd_PASV}, 63 | {"PORT", ftp_cmd_PORT}, 64 | {"PWD", ftp_cmd_PWD}, 65 | {"QUIT", ftp_cmd_QUIT}, 66 | {"REST", ftp_cmd_REST}, 67 | {"RETR", ftp_cmd_RETR}, 68 | {"RMD", ftp_cmd_RMD}, 69 | {"RNFR", ftp_cmd_RNFR}, 70 | {"RNTO", ftp_cmd_RNTO}, 71 | {"SIZE", ftp_cmd_SIZE}, 72 | {"STOR", ftp_cmd_STOR}, 73 | {"SYST", ftp_cmd_SYST}, 74 | {"TYPE", ftp_cmd_TYPE}, 75 | {"USER", ftp_cmd_USER}, 76 | 77 | // custom commands 78 | {"KILL", ftp_cmd_KILL}, 79 | {"MTRW", ftp_cmd_MTRW}, 80 | {"CHMOD", ftp_cmd_CHMOD}, 81 | 82 | // duplicates that ensure commands are 4 bytes long 83 | {"XCUP", ftp_cmd_CWD}, 84 | {"XMKD", ftp_cmd_MKD}, 85 | {"XPWD", ftp_cmd_PWD}, 86 | {"XRMD", ftp_cmd_RMD}, 87 | 88 | // not yet implemnted 89 | {"XRCP", ftp_cmd_unavailable}, 90 | {"XRSQ", ftp_cmd_unavailable}, 91 | {"XSEM", ftp_cmd_unavailable}, 92 | {"XSEN", ftp_cmd_unavailable}, 93 | }; 94 | 95 | 96 | /** 97 | * Number of FTP commands in the lookup table. 98 | **/ 99 | static int nb_ftp_commands = (sizeof(commands)/sizeof(ftp_command_t)); 100 | 101 | 102 | /** 103 | * Read a line from a file descriptor. 104 | **/ 105 | static char* 106 | ftp_readline(int fd) { 107 | int bufsize = 1024; 108 | int position = 0; 109 | char *buffer_backup; 110 | char *buffer = calloc(bufsize, sizeof(char)); 111 | char c; 112 | 113 | if(!buffer) { 114 | FTP_LOG_PERROR("malloc"); 115 | return NULL; 116 | } 117 | 118 | while(1) { 119 | int len = read(fd, &c, 1); 120 | if(len == -1 && errno == EINTR) { 121 | continue; 122 | } 123 | 124 | if(len <= 0) { 125 | free(buffer); 126 | return NULL; 127 | } 128 | 129 | if(c == '\r') { 130 | buffer[position] = '\0'; 131 | position = 0; 132 | continue; 133 | } 134 | 135 | if(c == '\n') { 136 | return buffer; 137 | } 138 | 139 | buffer[position++] = c; 140 | 141 | if(position >= bufsize) { 142 | bufsize += 1024; 143 | buffer_backup = buffer; 144 | buffer = realloc(buffer, bufsize); 145 | if(!buffer) { 146 | FTP_LOG_PERROR("realloc"); 147 | free(buffer_backup); 148 | return NULL; 149 | } 150 | } 151 | } 152 | } 153 | 154 | 155 | /** 156 | * Execute an FTP command. 157 | **/ 158 | static int 159 | ftp_execute(ftp_env_t *env, char *line) { 160 | char *sep = strchr(line, ' '); 161 | char *arg = strchr(line, 0); 162 | 163 | if(sep) { 164 | sep[0] = 0; 165 | arg = sep + 1; 166 | } 167 | 168 | for(int i=0; iactive_fd, msg, len) != len) { 195 | return -1; 196 | } 197 | 198 | return 0; 199 | } 200 | 201 | 202 | /** 203 | * Entry point for new FTP connections. 204 | **/ 205 | static void* 206 | ftp_thread(void *args) { 207 | ftp_env_t env; 208 | bool running; 209 | char *line; 210 | char* cmd; 211 | 212 | env.data_fd = -1; 213 | env.passive_fd = -1; 214 | env.active_fd = (int)(long)args; 215 | 216 | env.type = 'A'; 217 | env.data_offset = 0; 218 | 219 | strcpy(env.cwd, "/"); 220 | memset(env.rename_path, 0, sizeof(env.rename_path)); 221 | memset(&env.data_addr, 0, sizeof(env.data_addr)); 222 | 223 | running = !ftp_greet(&env); 224 | 225 | while(running) { 226 | if(!(line=ftp_readline(env.active_fd))) { 227 | break; 228 | } 229 | 230 | cmd = line; 231 | if(!strncmp(line, "SITE ", 5)) { 232 | cmd += 5; 233 | } 234 | 235 | if(ftp_execute(&env, cmd)) { 236 | running = false; 237 | } 238 | 239 | free(line); 240 | } 241 | 242 | if(env.active_fd > 0) { 243 | close(env.active_fd); 244 | } 245 | 246 | if(env.passive_fd > 0) { 247 | close(env.passive_fd); 248 | } 249 | 250 | if(env.data_fd > 0) { 251 | close(env.data_fd); 252 | } 253 | 254 | pthread_exit(NULL); 255 | 256 | return NULL; 257 | } 258 | 259 | 260 | /** 261 | * Serve FTP on a given port. 262 | **/ 263 | static int 264 | ftp_serve(uint16_t port, int notify_user) { 265 | struct sockaddr_in server_addr; 266 | struct sockaddr_in client_addr; 267 | char ip[INET_ADDRSTRLEN]; 268 | struct ifaddrs *ifaddr; 269 | int ifaddr_wait = 1; 270 | socklen_t addr_len; 271 | pthread_t trd; 272 | int connfd; 273 | int srvfd; 274 | 275 | if(getifaddrs(&ifaddr) == -1) { 276 | FTP_LOG_PERROR("getifaddrs"); 277 | exit(EXIT_FAILURE); 278 | } 279 | 280 | signal(SIGPIPE, SIG_IGN); 281 | 282 | // Enumerate all AF_INET IPs 283 | for(struct ifaddrs *ifa=ifaddr; ifa!=NULL; ifa=ifa->ifa_next) { 284 | if(ifa->ifa_addr == NULL) { 285 | continue; 286 | } 287 | 288 | if(ifa->ifa_addr->sa_family != AF_INET) { 289 | continue; 290 | } 291 | 292 | // skip localhost 293 | if(!strncmp("lo", ifa->ifa_name, 2)) { 294 | continue; 295 | } 296 | 297 | struct sockaddr_in *in = (struct sockaddr_in*)ifa->ifa_addr; 298 | inet_ntop(AF_INET, &(in->sin_addr), ip, sizeof(ip)); 299 | 300 | // skip interfaces without an ip 301 | if(!strncmp("0.", ip, 2)) { 302 | continue; 303 | } 304 | 305 | if(notify_user) { 306 | notify("Serving FTP on %s:%d (%s)", ip, port, ifa->ifa_name); 307 | } 308 | FTP_LOG_PRINTF("Serving FTP on %s:%d (%s)\n", ip, port, ifa->ifa_name); 309 | ifaddr_wait = 0; 310 | } 311 | 312 | freeifaddrs(ifaddr); 313 | 314 | if(ifaddr_wait) { 315 | return 0; 316 | } 317 | 318 | if((srvfd=socket(AF_INET, SOCK_STREAM, 0)) < 0) { 319 | FTP_LOG_PERROR("socket"); 320 | return -1; 321 | } 322 | 323 | if(setsockopt(srvfd, SOL_SOCKET, SO_REUSEADDR, &(int){1}, sizeof(int)) < 0) { 324 | FTP_LOG_PERROR("setsockopt"); 325 | return -1; 326 | } 327 | 328 | memset(&server_addr, 0, sizeof(server_addr)); 329 | server_addr.sin_family = AF_INET; 330 | server_addr.sin_addr.s_addr = htonl(INADDR_ANY); 331 | server_addr.sin_port = htons(port); 332 | 333 | if(bind(srvfd, (struct sockaddr*)&server_addr, sizeof(server_addr)) != 0) { 334 | FTP_LOG_PERROR("bind"); 335 | return -1; 336 | } 337 | 338 | if(listen(srvfd, 5) != 0) { 339 | FTP_LOG_PERROR("listen"); 340 | return -1; 341 | } 342 | 343 | addr_len = sizeof(client_addr); 344 | 345 | while(1) { 346 | if((connfd=accept(srvfd, (struct sockaddr*)&client_addr, &addr_len)) < 0) { 347 | FTP_LOG_PERROR("accept"); 348 | break; 349 | } 350 | 351 | pthread_create(&trd, NULL, ftp_thread, (void*)(long)connfd); 352 | } 353 | 354 | return close(srvfd); 355 | } 356 | 357 | 358 | /** 359 | * Fint the pid of a process with the given name. 360 | **/ 361 | static pid_t 362 | find_pid(const char* name) { 363 | int mib[4] = {1, 14, 8, 0}; 364 | pid_t mypid = getpid(); 365 | pid_t pid = -1; 366 | size_t buf_size; 367 | uint8_t *buf; 368 | 369 | if(sysctl(mib, 4, 0, &buf_size, 0, 0)) { 370 | FTP_LOG_PERROR("sysctl"); 371 | return -1; 372 | } 373 | 374 | if(!(buf=malloc(buf_size))) { 375 | FTP_LOG_PERROR("malloc"); 376 | return -1; 377 | } 378 | 379 | if(sysctl(mib, 4, buf, &buf_size, 0, 0)) { 380 | FTP_LOG_PERROR("sysctl"); 381 | free(buf); 382 | return -1; 383 | } 384 | 385 | for(uint8_t *ptr=buf; ptr<(buf+buf_size);) { 386 | int ki_structsize = *(int*)ptr; 387 | pid_t ki_pid = *(pid_t*)&ptr[72]; 388 | char *ki_tdname = (char*)&ptr[447]; 389 | 390 | ptr += ki_structsize; 391 | if(!strcmp(name, ki_tdname) && ki_pid != mypid) { 392 | pid = ki_pid; 393 | } 394 | } 395 | 396 | free(buf); 397 | 398 | return pid; 399 | } 400 | 401 | 402 | /** 403 | * Launch payload. 404 | **/ 405 | int 406 | main() { 407 | uint16_t port = 2121; 408 | int notify_user = 1; 409 | pid_t pid; 410 | 411 | syscall(SYS_thr_set_name, -1, "ftpsrv.elf"); 412 | 413 | FTP_LOG_PRINTF("FTP server was compiled at %s %s\n", __DATE__, __TIME__); 414 | 415 | while((pid=find_pid("ftpsrv.elf")) > 0) { 416 | if(kill(pid, SIGKILL)) { 417 | FTP_LOG_PERROR("kill"); 418 | return EXIT_FAILURE; 419 | } 420 | sleep(1); 421 | } 422 | 423 | // change authid so certain character devices can be read, e.g., 424 | // /dev/sflash0 425 | pid = getpid(); 426 | if(kernel_set_ucred_authid(pid, 0x4801000000000013L)) { 427 | FTP_LOG_PUTS("Unable to change AuthID"); 428 | return EXIT_FAILURE; 429 | } 430 | 431 | while(1) { 432 | ftp_serve(port, notify_user); 433 | notify_user = 0; 434 | sleep(3); 435 | } 436 | 437 | return EXIT_SUCCESS; 438 | } 439 | 440 | 441 | /* 442 | Local Variables: 443 | c-file-style: "gnu" 444 | End: 445 | */ 446 | -------------------------------------------------------------------------------- /notify.c: -------------------------------------------------------------------------------- 1 | /* Copyright (C) 2024 John Törnblom 2 | 3 | This program is free software; you can redistribute it and/or modify it 4 | under the terms of the GNU General Public License as published by the 5 | Free Software Foundation; either version 3, or (at your option) any 6 | later version. 7 | 8 | This program is distributed in the hope that it will be useful, 9 | but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | GNU General Public License for more details. 12 | 13 | You should have received a copy of the GNU General Public License 14 | along with this program; see the file COPYING. If not, see 15 | . */ 16 | 17 | #include 18 | #include 19 | #include 20 | 21 | 22 | typedef struct notify_request { 23 | char useless1[45]; 24 | char message[3075]; 25 | } notify_request_t; 26 | 27 | 28 | int sceKernelSendNotificationRequest(int, notify_request_t*, size_t, int); 29 | 30 | 31 | void 32 | notify(const char *fmt, ...) { 33 | notify_request_t req; 34 | va_list args; 35 | 36 | bzero(&req, sizeof req); 37 | va_start(args, fmt); 38 | vsnprintf(req.message, sizeof req.message, fmt, args); 39 | va_end(args); 40 | 41 | sceKernelSendNotificationRequest(0, &req, sizeof req, 0); 42 | } 43 | -------------------------------------------------------------------------------- /notify.h: -------------------------------------------------------------------------------- 1 | /* Copyright (C) 2024 John Törnblom 2 | 3 | This program is free software; you can redistribute it and/or modify it 4 | under the terms of the GNU General Public License as published by the 5 | Free Software Foundation; either version 3, or (at your option) any 6 | later version. 7 | 8 | This program is distributed in the hope that it will be useful, 9 | but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | GNU General Public License for more details. 12 | 13 | You should have received a copy of the GNU General Public License 14 | along with this program; see the file COPYING. If not, see 15 | . */ 16 | 17 | #pragma once 18 | 19 | 20 | void notify(const char *fmt, ...); 21 | --------------------------------------------------------------------------------