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- /* vim: ts=4 sw=4 noexpandtab
- * This file is part of ToaruOS and is released under the terms
- * of the NCSA / University of Illinois License - see LICENSE.md
- * Copyright (C) 2015-2017 K. Lange
- *
- * netinit
- *
- * Download, decompress, and mount a root filesystem from the
- * network and run the `/bin/init` contained therein.
- *
- */
- #include <stdio.h>
- #include <string.h>
- #include <stdlib.h>
- #include <signal.h>
- #include <unistd.h>
- #include <fcntl.h>
- #include <errno.h>
- #include <time.h>
- #include <syscall.h>
- #include <sys/wait.h>
- #include <sys/ioctl.h>
- #include <sys/utsname.h>
- #include <sys/time.h>
- #include <getopt.h>
- #include <syscall.h>
- #define DEFAULT_URL "http://10.0.2.1:8080/netboot.img"
- #include <pthread.h>
- #include <kernel/video.h>
- #include "../lib/list.c"
- #include "../lib/hashmap.c"
- #include "terminal-font.h"
- extern int mount(char* src,char* tgt,char* typ,unsigned long,void*);
- #define SIZE 512
- struct http_req {
- char domain[SIZE];
- char path[SIZE];
- int port;
- int ssl;
- };
- struct {
- int show_headers;
- const char * output_file;
- const char * cookie;
- FILE * out;
- } fetch_options = {0};
- #define TRACE(msg,...) do { \
- char tmp[512]; \
- sprintf(tmp, msg, ##__VA_ARGS__); \
- fprintf(stderr, "%s", tmp); \
- fflush(stderr); \
- print_string(tmp); \
- } while(0)
- static int has_video = 0;
- static int width, height, depth;
- static char * framebuffer;
- static struct timeval start;
- static int framebuffer_fd;
- #define char_height 20
- #define char_width 9
- #define BG_COLOR 0xFF050505
- #define FG_COLOR 0xFFCCCCCC
- #define EX_COLOR 0xFF999999
- static void set_point(int x, int y, uint32_t value) {
- uint32_t * disp = (uint32_t *)framebuffer;
- uint32_t * cell = &disp[y * width + x];
- *cell = value;
- }
- static void write_char(int x, int y, int val, uint32_t color) {
- if (val > 128) {
- val = 4;
- }
- #ifdef number_font
- uint8_t * c = number_font[val];
- for (uint8_t i = 0; i < char_height; ++i) {
- for (uint8_t j = 0; j < char_width; ++j) {
- if (c[i] & (1 << (8-j))) {
- set_point(x+j,y+i,color);
- } else {
- set_point(x+j,y+i,BG_COLOR);
- }
- }
- }
- #else
- uint16_t * c = large_font[val];
- for (uint8_t i = 0; i < char_height; ++i) {
- for (uint8_t j = 0; j < char_width; ++j) {
- if (c[i] & (1 << (15-j))) {
- set_point(x+j,y+i,color);
- } else {
- set_point(x+j,y+i,BG_COLOR);
- }
- }
- }
- #endif
- }
- #define BUF_SIZE 255
- static void read_http_line(char * buf, FILE * f) {
- memset(buf, 0x00, BUF_SIZE);
- fgets(buf, BUF_SIZE, f);
- char * _r = strchr(buf, '\r');
- if (_r) {
- *_r = '\0';
- }
- if (!_r) {
- _r = strchr(buf, '\n'); /* that's not right, but, whatever */
- if (_r) {
- *_r = '\0';
- }
- }
- }
- static unsigned short * textmemptr = (unsigned short *)0xB8000;
- static void placech(unsigned char c, int x, int y, int attr) {
- unsigned short *where;
- unsigned att = attr << 8;
- where = textmemptr + (y * 80 + x);
- *where = c | att;
- }
- #define LEFT_PAD 40
- static int x = LEFT_PAD;
- static int y = 0;
- static int vx = 0;
- static int vy = 0;
- static void print_string(char * msg) {
- if (!has_video) {
- while (*msg) {
- placech(' ',vx,vy,0);
- switch (*msg) {
- case '\n':
- vx = 0;
- vy += 1;
- if (vy == 25) {
- /* scroll */
- memcpy(textmemptr,textmemptr + 80,sizeof(unsigned short) * 80 * 24);
- memset(textmemptr + 80 * 24, 0, sizeof(unsigned short) * 80);
- vy = 24;
- }
- break;
- case '\033':
- msg++;
- if (*msg == '[') {
- msg++;
- if (*msg == 'G') {
- vx = 0;
- }
- if (*msg == 'K') {
- int last_x = vx;
- while (vx < 80) {
- placech(' ',vx,vy,0);
- vx++;
- }
- vx = last_x;
- }
- }
- break;
- default:
- placech(*msg,vx,vy,0xF);
- vx++;
- break;
- }
- placech('_',vx,vy,0xF);
- msg++;
- }
- } else {
- while (*msg) {
- write_char(x,y,' ',BG_COLOR);
- switch (*msg) {
- case '\n':
- x = LEFT_PAD;
- y += char_height;
- if (y > height - 30) {
- y = 0;
- }
- break;
- case '\033':
- msg++;
- if (*msg == '[') {
- msg++;
- if (*msg == 'G') {
- x = LEFT_PAD;
- }
- if (*msg == 'K') {
- int last_x = x;
- while (x < width) {
- write_char(x,y,' ',FG_COLOR);
- x += char_width;
- }
- x = last_x;
- }
- }
- break;
- default:
- write_char(x,y,*msg,FG_COLOR);
- x += char_width;
- break;
- }
- write_char(x,y,'_',EX_COLOR);
- msg++;
- }
- }
- }
- void parse_url(char * d, struct http_req * r) {
- if (strstr(d, "http://") == d) {
- d += strlen("http://");
- char * s = strstr(d, "/");
- if (!s) {
- strcpy(r->domain, d);
- strcpy(r->path, "");
- } else {
- *s = 0;
- s++;
- strcpy(r->domain, d);
- strcpy(r->path, s);
- }
- if (strstr(r->domain,":")) {
- char * port = strstr(r->domain,":");
- *port = '\0';
- port++;
- r->port = atoi(port);
- } else {
- r->port = 80;
- }
- r->ssl = 0;
- } else if (strstr(d, "https://") == d) {
- d += strlen("https://");
- char * s = strstr(d, "/");
- if (!s) {
- strcpy(r->domain, d);
- strcpy(r->path, "");
- } else {
- *s = 0;
- s++;
- strcpy(r->domain, d);
- strcpy(r->path, s);
- }
- if (strstr(r->domain,":")) {
- char * port = strstr(r->domain,":");
- *port = '\0';
- port++;
- r->port = atoi(port);
- } else {
- r->port = 443;
- }
- r->ssl = 1;
- } else {
- TRACE("sorry, can't parse %s\n", d);
- exit(1);
- }
- }
- static void bad_response(void) {
- TRACE("Bad response.\n");
- exit(1);
- }
- static char * img = "/tmp/netboot.img";
- static void update_video(int sig) {
- (void)sig;
- ioctl(framebuffer_fd, IO_VID_WIDTH, &width);
- ioctl(framebuffer_fd, IO_VID_HEIGHT, &height);
- ioctl(framebuffer_fd, IO_VID_DEPTH, &depth);
- ioctl(framebuffer_fd, IO_VID_ADDR, &framebuffer);
- ioctl(framebuffer_fd, IO_VID_SIGNAL, NULL);
- /* Clear the screen */
- for (int y = 0; y < height; ++y) {
- for (int x = 0; x < width; ++x) {
- set_point(x,y,BG_COLOR);
- }
- }
- x = LEFT_PAD;
- y = 0;
- if (sig) {
- TRACE("(video display changed to %d x %d)\n", width, height);
- }
- }
- static volatile int watchdog_success = 0;
- static void network_error(int is_thread) {
- TRACE("\n\n");
- TRACE("ERROR: Network does not seem to be available, or unable to reach host.\n");
- TRACE(" Please check your VM configuration.\n");
- if (is_thread) {
- pthread_exit(0);
- } else {
- exit(1);
- }
- }
- static void * watchdog_func(void * garbage) {
- (void)garbage;
- int i = 0;
- while (i < 5) {
- usleep(1000000);
- if (watchdog_success) {
- pthread_exit(0);
- }
- i++;
- }
- network_error(1);
- return NULL;
- }
- #define BAR_WIDTH 20
- #define bar_perc "||||||||||||||||||||"
- #define bar_spac " "
- static void draw_progress(size_t content_length, size_t size) {
- struct timeval now;
- gettimeofday(&now, NULL);
- TRACE("\033[G%6dkB",(int)size/1024);
- if (content_length) {
- int percent = (size * BAR_WIDTH) / (content_length);
- TRACE(" / %6dkB [%.*s%.*s]", (int)content_length/1024, percent,bar_perc,BAR_WIDTH-percent,bar_spac);
- }
- double timediff = (double)(now.tv_sec - start.tv_sec) + (double)(now.tv_usec - start.tv_usec)/1000000.0;
- if (timediff > 0.0) {
- double rate = (double)(size) / timediff;
- double s = rate/(1024.0) * 8.0;
- if (s > 1024.0) {
- TRACE(" %.2f mbps", s/1024.0);
- } else {
- TRACE(" %.2f kbps", s);
- }
- if (content_length) {
- if (rate > 0.0) {
- double remaining = (double)(content_length - size) / rate;
- TRACE(" (%.2f sec remaining)", remaining);
- }
- }
- }
- TRACE("\033[K");
- }
- static unsigned int crctab[256] = {
- 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
- 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
- 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
- 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
- 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
- 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
- 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
- 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
- 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
- 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
- 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
- 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
- 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
- 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
- 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
- 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
- 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
- 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
- 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
- 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
- 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
- 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
- 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
- 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
- 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
- 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
- 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
- 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
- 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
- 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
- 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
- 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
- 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
- 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
- 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
- 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
- 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
- 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
- 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
- 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
- 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
- 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
- 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
- };
- /* This is taken from the kernel/sys/version.c */
- #if (defined(__GNUC__) || defined(__GNUG__)) && !(defined(__clang__) || defined(__INTEL_COMPILER))
- # define COMPILER_VERSION "gcc " __VERSION__
- #elif (defined(__clang__))
- # define COMPILER_VERSION "clang " __clang_version__
- #else
- # define COMPILER_VERSION "unknown-compiler how-did-you-do-that"
- #endif
- int main(int argc, char * argv[]) {
- int _stdin = open("/dev/null", O_RDONLY);
- int _stdout = open("/dev/ttyS0", O_WRONLY);
- int _stderr = open("/dev/ttyS0", O_WRONLY);
- if (_stdout < 0) {
- _stdout = open("/dev/null", O_WRONLY);
- _stderr = open("/dev/null", O_WRONLY);
- }
- (void)_stdin;
- (void)_stdout;
- (void)_stderr;
- mount("x", "/tmp", "tmpfs", 0, NULL);
- int tmpfd = open("/proc/framebuffer", O_RDONLY);
- if (tmpfd < 0) {
- has_video = 0;
- memset(textmemptr, 0, sizeof(unsigned short) * 80 * 25);
- } else {
- has_video = 1;
- framebuffer_fd = open("/dev/fb0", O_RDONLY);
- update_video(0);
- signal(SIGWINEVENT, update_video);
- }
- TRACE("\n\nToaruOS Netinit Host\n\n");
- TRACE("ToaruOS is free software under the NCSA / University of Illinois license.\n");
- TRACE(" https://toaruos.org/ https://git.toaruos.org/klange/toaruos\n\n");
- struct utsname u;
- uname(&u);
- TRACE("%s %s %s %s\n", u.sysname, u.nodename, u.release, u.version);
- {
- char kernel_version[512] = {0};
- int fd = open("/proc/compiler", O_RDONLY);
- read(fd, kernel_version, 512);
- if (kernel_version[strlen(kernel_version)-1] == '\n') {
- kernel_version[strlen(kernel_version)-1] = '\0';
- }
- TRACE(" Kernel was built with: %s\n", kernel_version);
- }
- TRACE(" Netinit binary was built with: %s\n", COMPILER_VERSION);
- TRACE("\n");
- if (has_video) {
- TRACE("Display is %dx%d (%d bpp), framebuffer at 0x%x\n", width, height, depth, (unsigned int)framebuffer);
- }
- TRACE("\n");
- TRACE("Sleeping for a moment to let network initialize...\n");
- sleep(2);
- #define LINE_LEN 100
- char line[LINE_LEN];
- FILE * f = fopen("/proc/netif", "r");
- while (fgets(line, LINE_LEN, f) != NULL) {
- if (strstr(line, "ip:") == line) {
- char * value = strchr(line,'\t')+1;
- *strchr(value,'\n') = '\0';
- TRACE(" IP address: %s\n", value);
- } else if (strstr(line, "device:") == line) {
- char * value = strchr(line,'\t')+1;
- *strchr(value,'\n') = '\0';
- TRACE(" Network Driver: %s\n", value);
- } else if (strstr(line, "mac:") == line) {
- char * value = strchr(line,'\t')+1;
- *strchr(value,'\n') = '\0';
- TRACE(" MAC address: %s\n", value);
- } else if (strstr(line, "dns:") == line) {
- char * value = strchr(line,'\t')+1;
- *strchr(value,'\n') = '\0';
- TRACE(" DNS server: %s\n", value);
- } else if (strstr(line, "gateway:") == line) {
- char * value = strchr(line,'\t')+1;
- *strchr(value,'\n') = '\0';
- TRACE(" Gateway: %s\n", value);
- } else if (strstr(line,"no network") == line){
- network_error(0);
- }
- memset(line, 0, LINE_LEN);
- }
- fclose(f);
- struct http_req my_req;
- /* TODO: Extract URL from kcmdline */
- if (argc < 2) {
- parse_url(DEFAULT_URL, &my_req);
- } else {
- parse_url(argv[1], &my_req);
- }
- char file[100];
- sprintf(file, "/dev/net/%s:%d", my_req.domain, my_req.port);
- TRACE("Fetching from %s... ", my_req.domain);
- fetch_options.out = fopen(img,"w+");
- pthread_t watchdog;
- pthread_create(&watchdog, NULL, watchdog_func, NULL);
- f = fopen(file,"r+");
- if (!f) {
- network_error(0);
- }
- #if 0
- char * vbuf = malloc(10240);
- setvbuf(f,vbuf,_IOLBF,10240);
- #endif
- watchdog_success = 1;
- TRACE("Connection established.\n");
- fprintf(f,
- "GET /%s HTTP/1.0\r\n"
- "User-Agent: curl/7.35.0\r\n"
- "Host: %s\r\n"
- "Accept: */*\r\n"
- "\r\n", my_req.path, my_req.domain);
- gettimeofday(&start, NULL);
- hashmap_t * headers = hashmap_create(10);
- /* Parse response */
- {
- char buf[BUF_SIZE];
- read_http_line(buf, f);
- TRACE("[%s]\n", buf);
- char * elements[3];
- elements[0] = buf;
- elements[1] = strchr(elements[0], ' ');
- if (!elements[1]) bad_response();
- *elements[1] = '\0';
- elements[1]++;
- elements[2] = strchr(elements[1], ' ');
- if (!elements[2]) bad_response();
- *elements[2] = '\0';
- elements[2]++;
- if (strcmp(elements[1], "200")) {
- TRACE("Bad response code: %s\n", elements[1]);
- return 1;
- }
- }
- while (1) {
- char buf[BUF_SIZE];
- read_http_line(buf, f);
- if (!*buf) {
- TRACE("(done with headers)\n");
- break;
- }
- /* Split */
- char * name = buf;
- char * value = strstr(buf, ": ");
- if (!value) bad_response();
- *value = '\0';
- value += 2;
- hashmap_set(headers, name, strdup(value));
- }
- #if 1
- TRACE("Dumping headers.\n");
- list_t * hash_keys = hashmap_keys(headers);
- foreach(_key, hash_keys) {
- char * key = (char *)_key->value;
- TRACE("[%s] = %s\n", key, (char*)hashmap_get(headers, key));
- }
- list_free(hash_keys);
- free(hash_keys);
- #endif
- /* determine how many bytes we should read now */
- if (!hashmap_has(headers, "Content-Length")) {
- TRACE("Don't know how much to read.\n");
- return 1;
- }
- int bytes_to_read = atoi(hashmap_get(headers, "Content-Length"));
- size_t bytes_total = (size_t)bytes_to_read;
- size_t bytes_read = 0;
- #define RBUF_SIZE 10240
- char * buf = malloc(RBUF_SIZE);
- uint32_t crc32 = 0xffffffff;
- while (bytes_to_read > 0) {
- size_t r = fread(buf, 1, bytes_to_read < RBUF_SIZE ? bytes_to_read : RBUF_SIZE, f);
- fwrite(buf, 1, r, fetch_options.out);
- for (size_t i = 0; i < r; ++i) {
- int ind = (crc32 ^ buf[i]) & 0xFF;
- crc32 = (crc32 >> 8) ^ (crctab[ind]);
- }
- bytes_to_read -= r;
- bytes_read += r;
- draw_progress(bytes_total, bytes_read);
- }
- crc32 ^= 0xffffffff;
- free(buf);
- TRACE("\nDone: 0x%x\n", (unsigned int)crc32);
- fflush(fetch_options.out);
- fclose(fetch_options.out);
- #if 0
- FILE * xtmp = fopen(img, "r");
- crc32 = 0xffffffff;
- int tab = 0;
- size_t bytesread = 0;
- while (!feof(xtmp)) {
- uint8_t buf[1024];
- size_t r = fread(buf, 1, 1024, xtmp);
- for (size_t i = 0; i < r; ++i) {
- if (tab & 0x01) {
- TRACE("%2x ", (unsigned char)buf[i]);
- } else {
- TRACE("%2x", (unsigned char)buf[i]);
- }
- tab++;
- if (tab == 32){
- tab = 0;
- TRACE("\n");
- }
- int ind = (crc32 ^ buf[i]) & 0xFF;
- crc32 = (crc32 >> 8) ^ (crctab[ind]);
- }
- bytesread += r;
- }
- crc32 ^= 0xffffffff;
- TRACE("\nDisk crc32: 0x%x (%d)\n", (unsigned int)crc32, bytesread);
- #endif
- TRACE("Mounting filesystem... ");
- int err = 0;
- if ((err = mount(img, "/", "ext2", 0, NULL))) {
- TRACE("Mount error: %d; errno=%d\n", err, errno);
- return 0;
- } else {
- TRACE("Done.\n");
- }
- FILE * tmp = fopen("/bin/init","r");
- if (!tmp) {
- TRACE("/bin/init missing?\n");
- } else {
- TRACE("/bin/init exists, filesystem successfully mounted\n");
- fclose(tmp);
- }
- TRACE("Executing init...\n");
- char * const _argv[] = {
- "/bin/init",
- NULL,
- };
- execve("/bin/init",_argv,NULL);
- TRACE("ERROR: If you are seeing this, there was a problem\n");
- TRACE(" executing the init binary from the downloaded\n");
- TRACE(" filesystem. This may indicate a corrupted\n");
- TRACE(" download. Please try again.\n");
- return 0;
- }
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