X-Git-Url: http://git.joshuawise.com/netwatch.git/blobdiff_plain/6f9272bdabcda81425ec1aaecf26a160535d4749..91cc13402921ddb5b3b4e695b036a43c3722e615:/net/http/fs.c?ds=sidebyside diff --git a/net/http/fs.c b/net/http/fs.c index 9e6358d..cb7a226 100644 --- a/net/http/fs.c +++ b/net/http/fs.c @@ -33,10 +33,14 @@ #include "fs.h" #include "fsdata.h" #include "fsdata.c" +#include +#include +#include +#include /*-----------------------------------------------------------------------------------*/ -void fill_regs(struct fs_file *file) +void handle_regs(struct fs_file *file) { static unsigned char buf[2048]; @@ -63,7 +67,58 @@ void fill_regs(struct fs_file *file) file->data = buf; - file->len = strlen(buf); + file->len = strlen(buf)-1; +} + +void handle_backtrace(struct fs_file *file) +{ + static unsigned char buf[2048]; + static unsigned char buf2[64]; + int i = 10; + unsigned long *pebp, *peip; + unsigned long ebp; + unsigned long cr3; + + strcpy(buf, "Backtrace
");
+  ebp = *(unsigned long *)0xAFFE4;
+  cr3 = *(unsigned long *)0xAFFF8;
+  
+  sprintf(buf2, "0x%08x, from\n", *(unsigned long*)0xAFFF0);
+  strcat(buf, buf2);
+  
+  /* I never thought I'd do this again. */
+  while ((peip = demap(cr3, ebp+4)) != 0x0 && i--)
+  {
+    sprintf(buf2, "0x%08x, from\n", *peip);
+    strcat(buf, buf2);
+    pebp = demap(cr3, ebp);
+    if (!pebp)
+    {
+      strcat(buf, "<unreadable %ebp>\n");
+      break;
+    }
+    if (ebp >= *pebp && *pebp)
+    {
+      strcat(buf, "<recursive %ebp>\n");
+      break;
+    }
+    ebp = *pebp;
+  }
+  if (i == -1)
+    strcat(buf, "...\n");
+  else
+    strcat(buf, "<root>");
+  strcat(buf, "
"); + + file->data = buf; + file->len = strlen(buf)-1; +} + +void handle_reboot(struct fs_file *file) +{ + outb(0xCF9, 0x4); + file->data = "So long!"; + file->len = 8; } @@ -76,7 +131,17 @@ fs_open(const char *name, struct fs_file *file) /* /registers.html is CGI */ if (!strcmp(name, "/registers.html")) { - fill_regs(file); + handle_regs(file); + return 1; + } + if (!strcmp(name, "/backtrace.html")) + { + handle_backtrace(file); + return 1; + } + if (!strcmp(name, "/reboot")) + { + handle_reboot(file); return 1; } @@ -85,7 +150,7 @@ fs_open(const char *name, struct fs_file *file) f = f->next) { if (!strcmp(name, (const char*)f->name)) { file->data = f->data; - file->len = f->len; + file->len = f->len-1; return 1; } }