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More code for the audit log.
This commit is contained in:
Werner Koch
parent
63ec0b271c
commit
89671cdd64
6 changed files with 536 additions and 21 deletions
526
common/audit.c
526
common/audit.c
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@ -19,9 +19,12 @@
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#include <config.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include <assert.h>
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#include "util.h"
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#include "i18n.h"
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#include "audit.h"
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#include "audit-events.h"
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@ -50,11 +53,21 @@ struct audit_ctx_s
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size_t logsize; /* The allocated size for LOG. */
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size_t logused; /* The used size of LOG. */
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estream_t outstream; /* The current output stream. */
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int use_html; /* The output shall be HTML formatted. */
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int indentlevel; /* Current level of indentation. */
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};
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static void writeout_li (audit_ctx_t ctx, const char *oktext,
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const char *format, ...) JNLIB_GCC_A_PRINTF(3,4);
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static void writeout_rem (audit_ctx_t ctx,
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const char *format, ...) JNLIB_GCC_A_PRINTF(2,3);
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static const char *
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event2str (audit_event_t event)
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{
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@ -294,22 +307,486 @@ audit_log_cert (audit_ctx_t ctx, audit_event_t event,
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}
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/* Write TEXT to the outstream. */
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static void
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writeout (audit_ctx_t ctx, const char *text)
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{
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if (ctx->use_html)
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{
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for (; *text; text++)
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{
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if (*text == '<')
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es_fputs ("<", ctx->outstream);
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else if (*text == '&')
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es_fputs ("&", ctx->outstream);
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else
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es_putc (*text, ctx->outstream);
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}
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}
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else
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es_fputs (text, ctx->outstream);
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}
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/* Write TEXT to the outstream using a variable argument list. */
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static void
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writeout_v (audit_ctx_t ctx, const char *format, va_list arg_ptr)
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{
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char *buf;
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estream_vasprintf (&buf, format, arg_ptr);
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if (buf)
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{
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writeout (ctx, buf);
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xfree (buf);
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}
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else
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writeout (ctx, "[!!Out of core!!]");
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}
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/* Write TEXT as a paragraph. */
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static void
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writeout_para (audit_ctx_t ctx, const char *text)
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{
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if (ctx->use_html)
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es_fputs ("<p>", ctx->outstream);
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writeout (ctx, text);
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if (ctx->use_html)
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es_fputs ("</p>\n", ctx->outstream);
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else
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es_fputc ('\n', ctx->outstream);
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}
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static void
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enter_li (audit_ctx_t ctx)
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{
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if (ctx->use_html)
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{
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if (!ctx->indentlevel)
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{
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es_fputs ("<table border=\"0\">\n"
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" <colgroup>\n"
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" <col width=\"80%\" />\n"
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" <col width=\"20%\" />\n"
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" </colgroup>\n",
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ctx->outstream);
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}
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}
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ctx->indentlevel++;
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}
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static void
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leave_li (audit_ctx_t ctx)
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{
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ctx->indentlevel--;
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if (ctx->use_html)
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{
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if (!ctx->indentlevel)
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es_fputs ("</table>\n", ctx->outstream);
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}
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}
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/* Write TEXT as a list element. If OKTEXT is not NULL, append it to
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the last line. */
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static void
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writeout_li (audit_ctx_t ctx, const char *oktext, const char *format, ...)
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{
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va_list arg_ptr;
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const char *color = NULL;
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if (ctx->use_html && format && oktext)
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{
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if (!strcmp (oktext, "OK") || !strcmp (oktext, "Yes"))
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color = "green";
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else if (!strcmp (oktext, "FAIL") || !strcmp (oktext, "No"))
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color = "red";
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}
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if (ctx->use_html)
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{
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int i;
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es_fputs (" <tr><td><table><tr><td>", ctx->outstream);
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if (color)
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es_fprintf (ctx->outstream, "<font color=\"%s\">*</font>", color);
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else
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es_fputs ("*", ctx->outstream);
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for (i=1; i < ctx->indentlevel; i++)
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es_fputs (" ", ctx->outstream);
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es_fputs ("</td><td>", ctx->outstream);
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}
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else
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es_fprintf (ctx->outstream, "* %*s", (ctx->indentlevel-1)*2, "");
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if (format)
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{
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va_start (arg_ptr, format) ;
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writeout_v (ctx, format, arg_ptr);
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va_end (arg_ptr);
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}
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if (ctx->use_html)
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es_fputs ("</td></tr></table>", ctx->outstream);
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if (format && oktext)
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{
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if (ctx->use_html)
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{
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es_fputs ("</td><td>", ctx->outstream);
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if (color)
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es_fprintf (ctx->outstream, "<font color=\"%s\">", color);
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}
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else
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writeout (ctx, ": ");
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writeout (ctx, oktext);
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if (color)
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es_fputs ("</font>", ctx->outstream);
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}
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if (ctx->use_html)
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es_fputs ("</td></tr>\n", ctx->outstream);
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else
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es_fputc ('\n', ctx->outstream);
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}
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/* Write a remark line. */
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static void
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writeout_rem (audit_ctx_t ctx, const char *format, ...)
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{
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va_list arg_ptr;
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if (ctx->use_html)
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{
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int i;
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es_fputs (" <tr><td><table><tr><td>*", ctx->outstream);
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for (i=1; i < ctx->indentlevel; i++)
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es_fputs (" ", ctx->outstream);
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es_fputs (" </td><td> (", ctx->outstream);
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}
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else
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es_fprintf (ctx->outstream, "* %*s (", (ctx->indentlevel-1)*2, "");
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if (format)
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{
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va_start (arg_ptr, format) ;
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writeout_v (ctx, format, arg_ptr);
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va_end (arg_ptr);
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}
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if (ctx->use_html)
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es_fputs (")</td></tr></table></td></tr>\n", ctx->outstream);
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else
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es_fputs (")\n", ctx->outstream);
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}
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/* Return the first log item for EVENT. If STOPEVENT is not 0 never
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look behind that event in the log. If STARTITEM is not NULL start
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search _after_that item. */
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static log_item_t
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find_next_log_item (audit_ctx_t ctx, log_item_t startitem,
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audit_event_t event, audit_event_t stopevent)
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{
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int idx;
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for (idx=0; idx < ctx->logused; idx++)
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{
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if (startitem)
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{
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if (ctx->log + idx == startitem)
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startitem = NULL;
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}
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else if (stopevent && ctx->log[idx].event == stopevent)
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break;
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else if (ctx->log[idx].event == event)
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return ctx->log + idx;
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}
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return NULL;
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}
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static log_item_t
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find_log_item (audit_ctx_t ctx, audit_event_t event, audit_event_t stopevent)
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{
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return find_next_log_item (ctx, NULL, event, stopevent);
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}
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/* Helper to a format a serial number. */
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static char *
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format_serial (ksba_const_sexp_t sn)
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{
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const char *p = (const char *)sn;
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unsigned long n;
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char *endp;
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if (!p)
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return NULL;
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if (*p != '(')
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BUG (); /* Not a valid S-expression. */
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n = strtoul (p+1, &endp, 10);
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p = endp;
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if (*p != ':')
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BUG (); /* Not a valid S-expression. */
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return bin2hex (p+1, n, NULL);
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}
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/* Return a malloced string with the serial number and the issuer DN
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of the certificate. */
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static char *
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get_cert_name (ksba_cert_t cert)
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{
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char *result;
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ksba_sexp_t sn;
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char *issuer, *p;
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if (!cert)
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return xtrystrdup ("[no certificate]");
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issuer = ksba_cert_get_issuer (cert, 0);
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sn = ksba_cert_get_serial (cert);
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if (issuer && sn)
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{
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p = format_serial (sn);
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if (!p)
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result = xtrystrdup ("[invalid S/N]");
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else
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{
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result = xtrymalloc (strlen (p) + strlen (issuer) + 2 + 1);
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if (result)
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{
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*result = '#';
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strcpy (stpcpy (stpcpy (result+1, p),"/"), issuer);
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}
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xfree (p);
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}
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}
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else
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result = xtrystrdup ("[missing S/N or issuer]");
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ksba_free (sn);
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xfree (issuer);
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return result;
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}
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/* Return a malloced string with the serial number and the issuer DN
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of the certificate. */
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static char *
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get_cert_subject (ksba_cert_t cert, int idx)
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{
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char *result;
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char *subject;
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if (!cert)
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return xtrystrdup ("[no certificate]");
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subject = ksba_cert_get_subject (cert, idx);
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if (subject)
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{
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result = xtrymalloc (strlen (subject) + 1 + 1);
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if (result)
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{
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*result = '/';
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strcpy (result+1, subject);
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}
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}
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else
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result = NULL;
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xfree (subject);
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return result;
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}
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/* List the chain of certificates from STARTITEM up to STOPEVENT. The
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certifcates are written out as comments. */
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static void
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list_certchain (audit_ctx_t ctx, log_item_t startitem, audit_event_t stopevent)
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{
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log_item_t item;
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char *name;
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int idx;
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startitem = find_next_log_item (ctx, startitem, AUDIT_CHAIN_BEGIN,stopevent);
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if (!startitem)
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{
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writeout_li (ctx, gpg_strerror (GPG_ERR_MISSING_CERT)
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, _("Certificate chain"));
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return;
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}
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writeout_li (ctx, "OK", _("Certificate chain"));
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item = find_next_log_item (ctx, startitem,
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AUDIT_CHAIN_ROOTCERT, AUDIT_CHAIN_END);
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if (!item)
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writeout_rem (ctx, "%s", _("root certificate missing"));
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else
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{
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name = get_cert_name (item->cert);
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writeout_rem (ctx, "%s", name);
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xfree (name);
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}
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item = startitem;
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while ( ((item = find_next_log_item (ctx, item,
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AUDIT_CHAIN_CERT, AUDIT_CHAIN_END))))
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{
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name = get_cert_name (item->cert);
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writeout_rem (ctx, "%s", name);
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xfree (name);
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enter_li (ctx);
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for (idx=0; (name = get_cert_subject (item->cert, idx)); idx++)
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{
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writeout_rem (ctx, "%s", name);
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xfree (name);
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}
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leave_li (ctx);
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}
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}
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/* Process a verification operation. */
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static void
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proc_type_verify (audit_ctx_t ctx)
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{
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log_item_t loopitem, item;
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int signo, count, idx;
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char numbuf[35];
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enter_li (ctx);
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writeout_li (ctx, "fixme", "%s", _("Signature verification"));
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enter_li (ctx);
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writeout_li (ctx, "fixme", "%s", _("Gpg-Agent ready"));
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writeout_li (ctx, "fixme", "%s", _("Dirmngr ready"));
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item = find_log_item (ctx, AUDIT_GOT_DATA, AUDIT_NEW_SIG);
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writeout_li (ctx, item? "Yes":"No", "%s", _("Data available"));
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if (!item)
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goto leave;
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item = find_log_item (ctx, AUDIT_NEW_SIG, 0);
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writeout_li (ctx, item? "Yes":"No", "%s", _("Signature available"));
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if (!item)
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goto leave;
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item = find_log_item (ctx, AUDIT_DATA_HASH_ALGO, AUDIT_NEW_SIG);
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if (item)
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writeout_li (ctx, "OK", "%s", _("Parsing signature"));
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else
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{
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item = find_log_item (ctx, AUDIT_BAD_DATA_HASH_ALGO, AUDIT_NEW_SIG);
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if (item)
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{
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writeout_li (ctx,"FAIL", "%s", _("Parsing signature"));
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writeout_rem (ctx, _("Bad hash algorithm: %s"),
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item->string? item->string:"?");
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}
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else
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writeout_li (ctx, "FAIL", "%s", _("Parsing signature") );
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goto leave;
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}
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/* Loop over all signatures. */
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loopitem = find_log_item (ctx, AUDIT_NEW_SIG, 0);
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assert (loopitem);
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do
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{
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signo = loopitem->have_intvalue? loopitem->intvalue : -1;
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item = find_next_log_item (ctx, loopitem,
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AUDIT_SIG_STATUS, AUDIT_NEW_SIG);
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writeout_li (ctx, item? item->string:"?", _("Signature %d"), signo);
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item = find_next_log_item (ctx, loopitem,
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AUDIT_SIG_NAME, AUDIT_NEW_SIG);
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if (item)
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writeout_rem (ctx, "%s", item->string);
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enter_li (ctx);
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/* List the certificate chain. */
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list_certchain (ctx, loopitem, AUDIT_NEW_SIG);
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/* Show the result of the chain validation. */
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item = find_next_log_item (ctx, loopitem,
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AUDIT_CHAIN_STATUS, AUDIT_NEW_SIG);
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if (item && item->have_err)
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{
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writeout_li (ctx, item->err? "FAIL":"OK",
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_("Validation of certificate chain"));
|
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if (item->err)
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writeout_rem (ctx, "%s", gpg_strerror (item->err));
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}
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/* Show whether the root certificate is fine. */
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writeout_li (ctx, "No", "%s", _("Root certificate trustworthy"));
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/* Show result of the CRL/OCSP check. */
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writeout_li (ctx, "-", "%s", _("CRL/OCSP check of certificates"));
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leave_li (ctx);
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}
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while ((loopitem = find_next_log_item (ctx, loopitem, AUDIT_NEW_SIG, 0)));
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|
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leave:
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/* Always list the certificates stored in the signature. */
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item = NULL;
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count = 0;
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while ( ((item = find_next_log_item (ctx, item,
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AUDIT_SAVE_CERT, AUDIT_NEW_SIG))))
|
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count++;
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snprintf (numbuf, sizeof numbuf, "%d", count);
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writeout_li (ctx, numbuf, _("Included certificates"));
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item = NULL;
|
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while ( ((item = find_next_log_item (ctx, item,
|
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AUDIT_SAVE_CERT, AUDIT_NEW_SIG))))
|
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{
|
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char *name = get_cert_name (item->cert);
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writeout_rem (ctx, "%s", name);
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xfree (name);
|
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enter_li (ctx);
|
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for (idx=0; (name = get_cert_subject (item->cert, idx)); idx++)
|
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{
|
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writeout_rem (ctx, "%s", name);
|
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xfree (name);
|
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}
|
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leave_li (ctx);
|
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}
|
||||
|
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leave_li (ctx);
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leave_li (ctx);
|
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}
|
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|
||||
|
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|
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|
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/* Print the formatted audit result. THIS IS WORK IN PROGRESS. */
|
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void
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audit_print_result (audit_ctx_t ctx, estream_t out)
|
||||
audit_print_result (audit_ctx_t ctx, estream_t out, int use_html)
|
||||
{
|
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int idx;
|
||||
int maxlen;
|
||||
size_t n;
|
||||
|
||||
es_fputs ("<div class=\"GnuPGAuditLog\">\n", out);
|
||||
if (getenv ("use_html"))
|
||||
use_html = 1;
|
||||
|
||||
if (!ctx)
|
||||
goto leave;
|
||||
return;
|
||||
|
||||
assert (!ctx->outstream);
|
||||
ctx->outstream = out;
|
||||
ctx->use_html = use_html;
|
||||
ctx->indentlevel = 0;
|
||||
|
||||
if (use_html)
|
||||
es_fputs ("<div class=\"GnuPGAuditLog\">\n", ctx->outstream);
|
||||
|
||||
if (!ctx->log || !ctx->logused)
|
||||
{
|
||||
es_fprintf (out, "<p>AUDIT-LOG: No entries</p>\n");
|
||||
writeout_para (ctx, _("No audit log entries."));
|
||||
goto leave;
|
||||
}
|
||||
|
||||
|
|
@ -320,24 +797,49 @@ audit_print_result (audit_ctx_t ctx, estream_t out)
|
|||
maxlen = n;
|
||||
}
|
||||
|
||||
es_fputs ("<ul>\n", out);
|
||||
if (use_html)
|
||||
es_fputs ("<pre>\n", out);
|
||||
for (idx=0; idx < ctx->logused; idx++)
|
||||
{
|
||||
es_fprintf (out, " <li>%-*s",
|
||||
es_fprintf (out, "log: %-*s",
|
||||
maxlen, event2str (ctx->log[idx].event));
|
||||
if (ctx->log[idx].have_intvalue)
|
||||
es_fprintf (out, " i=%d", ctx->log[idx].intvalue);
|
||||
if (ctx->log[idx].string)
|
||||
es_fprintf (out, " s=`%s'", ctx->log[idx].string);
|
||||
{
|
||||
es_fputs (" s=`", out);
|
||||
writeout (ctx, ctx->log[idx].string);
|
||||
es_fputs ("'", out);
|
||||
}
|
||||
if (ctx->log[idx].cert)
|
||||
es_fprintf (out, " has_cert");
|
||||
if (ctx->log[idx].have_err)
|
||||
es_fprintf (out, " err=\"%s\"", gpg_strerror (ctx->log[idx].err));
|
||||
es_fputs ("</li>\n", out);
|
||||
{
|
||||
es_fputs (" err=`", out);
|
||||
writeout (ctx, gpg_strerror (ctx->log[idx].err));
|
||||
es_fputs ("'", out);
|
||||
}
|
||||
es_fputs ("\n", out);
|
||||
}
|
||||
if (use_html)
|
||||
es_fputs ("</pre>\n", out);
|
||||
else
|
||||
es_fputs ("\n", out);
|
||||
|
||||
switch (ctx->type)
|
||||
{
|
||||
case AUDIT_TYPE_NONE:
|
||||
writeout_para (ctx, _("Audit of this operation is not supported."));
|
||||
break;
|
||||
case AUDIT_TYPE_VERIFY:
|
||||
proc_type_verify (ctx);
|
||||
break;
|
||||
}
|
||||
es_fputs ("</ul>\n", out);
|
||||
|
||||
leave:
|
||||
es_fputs ("</div>\n", out);
|
||||
if (use_html)
|
||||
es_fputs ("</div>\n", ctx->outstream);
|
||||
ctx->outstream = NULL;
|
||||
ctx->use_html = 0;
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue