| | 1 | /* |
| | 2 | * Copyright (c) 2001-2003 Swedish Institute of Computer Science. |
| | 3 | * All rights reserved. |
| | 4 | * |
| | 5 | * Redistribution and use in source and binary forms, with or without modification, |
| | 6 | * are permitted provided that the following conditions are met: |
| | 7 | * |
| | 8 | * 1. Redistributions of source code must retain the above copyright notice, |
| | 9 | * this list of conditions and the following disclaimer. |
| | 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| | 11 | * this list of conditions and the following disclaimer in the documentation |
| | 12 | * and/or other materials provided with the distribution. |
| | 13 | * 3. The name of the author may not be used to endorse or promote products |
| | 14 | * derived from this software without specific prior written permission. |
| | 15 | * |
| | 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| | 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| | 18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
| | 19 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| | 20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
| | 21 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| | 22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| | 23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| | 24 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
| | 25 | * OF SUCH DAMAGE. |
| | 26 | * |
| | 27 | * This file is part of the lwIP TCP/IP stack. |
| | 28 | * |
| | 29 | * Author: Adam Dunkels <adam@sics.se> |
| | 30 | * |
| | 31 | */ |
| | 32 | #include "lwip/def.h" |
| | 33 | #include "fs.h" |
| | 34 | #include "fsdata.h" |
| | 35 | #include "fsdata.c" |
| | 36 | #include <io.h> |
| | 37 | #include <minilib.h> |
| | 38 | #include <paging.h> |
| | 39 | #include <output.h> |
| | 40 | |
| | 41 | /*-----------------------------------------------------------------------------------*/ |
| | 42 | |
| | 43 | void handle_regs(struct fs_file *file) |
| | 44 | { |
| | 45 | static unsigned char buf[2048]; |
| | 46 | |
| | 47 | sprintf(buf, |
| | 48 | "<html><head><title>Registers</title></head><body>" |
| | 49 | "<p>At the time you requested this page, the system's registers were:</p>" |
| | 50 | "<tt><pre>" |
| | 51 | "%%eax: 0x%08x %%ebx: 0x%08x %%ecx: 0x%08x %%edx: 0x%08x\n" |
| | 52 | "%%ebp: 0x%08x %%esi: 0x%08x %%edi: 0x%08x %%esp: 0x%08x\n" |
| | 53 | "%%cr0: 0x%08x %%cr3: 0x%08x %%eip: 0x%08x %%eflags: 0x%08x\n" |
| | 54 | "</pre></tt></body></html>", |
| | 55 | *(unsigned long*)0xAFFD0, |
| | 56 | *(unsigned long*)0xAFFDC, |
| | 57 | *(unsigned long*)0xAFFD4, |
| | 58 | *(unsigned long*)0xAFFD8, |
| | 59 | *(unsigned long*)0xAFFE4, |
| | 60 | *(unsigned long*)0xAFFE8, |
| | 61 | *(unsigned long*)0xAFFEC, |
| | 62 | *(unsigned long*)0xAFFE0, |
| | 63 | *(unsigned long*)0xAFFFC, |
| | 64 | *(unsigned long*)0xAFFF8, |
| | 65 | *(unsigned long*)0xAFFF0, |
| | 66 | *(unsigned long*)0xAFFF4); |
| | 67 | |
| | 68 | |
| | 69 | file->data = buf; |
| | 70 | file->len = strlen(buf)-1; |
| | 71 | } |
| | 72 | |
| | 73 | void handle_backtrace(struct fs_file *file) |
| | 74 | { |
| | 75 | static unsigned char buf[2048]; |
| | 76 | static unsigned char buf2[64]; |
| | 77 | int i = 10; |
| | 78 | unsigned long *pebp, *peip; |
| | 79 | unsigned long ebp; |
| | 80 | unsigned long cr3; |
| | 81 | |
| | 82 | strcpy(buf, "<html><head><title>Backtrace</title></head><body><tt><pre>"); |
| | 83 | ebp = *(unsigned long *)0xAFFE4; |
| | 84 | cr3 = *(unsigned long *)0xAFFF8; |
| | 85 | |
| | 86 | sprintf(buf2, "0x%08x, from\n", *(unsigned long*)0xAFFF0); |
| | 87 | strcat(buf, buf2); |
| | 88 | |
| | 89 | /* I never thought I'd do this again. */ |
| | 90 | while ((peip = demap(cr3, ebp+4)) != 0x0 && i--) |
| | 91 | { |
| | 92 | sprintf(buf2, "0x%08x, from\n", *peip); |
| | 93 | strcat(buf, buf2); |
| | 94 | pebp = demap(cr3, ebp); |
| | 95 | if (!pebp) |
| | 96 | { |
| | 97 | strcat(buf, "<unreadable %ebp>\n"); |
| | 98 | break; |
| | 99 | } |
| | 100 | if (ebp >= *pebp && *pebp) |
| | 101 | { |
| | 102 | strcat(buf, "<recursive %ebp>\n"); |
| | 103 | break; |
| | 104 | } |
| | 105 | ebp = *pebp; |
| | 106 | } |
| | 107 | if (i == -1) |
| | 108 | strcat(buf, "...\n"); |
| | 109 | else |
| | 110 | strcat(buf, "<root>"); |
| | 111 | strcat(buf, "</pre></tt></body></html>"); |
| | 112 | |
| | 113 | file->data = buf; |
| | 114 | file->len = strlen(buf)-1; |
| | 115 | } |
| | 116 | |
| | 117 | void handle_reboot(struct fs_file *file) |
| | 118 | { |
| | 119 | outb(0xCF9, 0x4); |
| | 120 | file->data = "So long!"; |
| | 121 | file->len = 8; |
| | 122 | } |
| | 123 | |
| | 124 | |
| | 125 | /*-----------------------------------------------------------------------------------*/ |
| | 126 | int |
| | 127 | fs_open(const char *name, struct fs_file *file) |
| | 128 | { |
| | 129 | const struct fsdata_file *f; |
| | 130 | |
| | 131 | /* /registers.html is CGI */ |
| | 132 | if (!strcmp(name, "/registers.html")) |
| | 133 | { |
| | 134 | handle_regs(file); |
| | 135 | return 1; |
| | 136 | } |
| | 137 | if (!strcmp(name, "/backtrace.html")) |
| | 138 | { |
| | 139 | handle_backtrace(file); |
| | 140 | return 1; |
| | 141 | } |
| | 142 | if (!strcmp(name, "/reboot")) |
| | 143 | { |
| | 144 | handle_reboot(file); |
| | 145 | return 1; |
| | 146 | } |
| | 147 | |
| | 148 | for(f = FS_ROOT; |
| | 149 | f != NULL; |
| | 150 | f = f->next) { |
| | 151 | if (!strcmp(name, (const char*)f->name)) { |
| | 152 | file->data = f->data; |
| | 153 | file->len = f->len-1; |
| | 154 | return 1; |
| | 155 | } |
| | 156 | } |
| | 157 | file->data = "You clown..."; |
| | 158 | file->len = 9; |
| | 159 | return 0; |
| | 160 | } |
| | 161 | /*-----------------------------------------------------------------------------------*/ |
git.joshuawise.com / netwatch.git / blame_incremental