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123 lines
2.4 KiB
C
123 lines
2.4 KiB
C
/* radare - LGPL - Copyright 2011-2015 - pancake */
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#include <r_core.h>
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R_API int r_core_patch_line (RCore *core, char *str) {
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char *p, *q;
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p = strchr (str+1, ' ');
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if (!p)
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return 0;
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*p = 0;
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for (++p; *p==' '; p++); // XXX: skipsspaces here
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switch (*p) {
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case '"':
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q = strchr (p+1,'"');
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if (q) *q = 0;
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r_core_cmdf (core, "s %s", str);
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r_core_cmdf (core, "\"w %s\"", p+1);
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break;
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case ':':
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r_core_cmdf (core, "s %s", str);
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r_core_cmdf (core, "wa %s", p);
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break;
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default:
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r_core_cmdf (core, "s %s", str);
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r_core_cmdf (core, "wx %s", p);
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break;
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}
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return 1;
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}
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static int __core_patch_bracket(RCore *core, const char *str, ut64 *noff) {
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char tmp[128];
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char *s, *p, *q, *off;
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RBuffer *b = r_buf_new ();
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if (!b) return 0;
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p = off = strdup (str);;
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if (!p) {
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r_buf_free (b);
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return 0;
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}
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for (;*p;) {
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if (*p=='\n') {
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*p++ = 0;
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} else {
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p++;
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continue;
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}
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if (*str=='}')
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break;
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if ((q=strstr (str, "${"))) {
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char *end = strchr (q+2,'}');
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if (end) {
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*q = *end = 0;
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*noff = r_num_math (core->num, q+2);
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r_buf_append_bytes (b, (const ut8*)str, strlen (str));
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snprintf (tmp, sizeof (tmp), "0x%08"PFMT64x, *noff);
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r_buf_append_bytes (b, (const ut8*)tmp, strlen (tmp));
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r_buf_append_bytes (b, (const ut8*)end+1, strlen (end+1));
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}
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} else r_buf_append_bytes (b, (const ut8*)str, strlen (str));
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str = p;
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}
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s = r_buf_to_string (b);
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r_egg_load (core->egg, s, 0);
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free (s);
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r_egg_compile (core->egg);
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r_egg_assemble (core->egg);
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r_buf_free (b);
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b = r_egg_get_bin (core->egg);
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if (strcmp (off, "+"))
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*noff = r_num_math (core->num, off);
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r_core_write_at (core, *noff, b->buf, b->length);
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*noff += b->length;
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free (off);
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return 1;
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}
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R_API int r_core_patch (RCore *core, const char *patch) {
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char *p, *p0, *str;
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ut64 noff = 0LL;
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p = p0 = str = strdup (patch);
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if (!p)
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return 0;
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for (; *p; p++) {
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/* read until newline */
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if (!*p || *p=='\n') *p++ = 0; else continue;
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switch (*str) {
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case '#':
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case '\n':
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case '\r':
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case '\0':
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break;
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case ':':
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r_core_cmd0 (core, str+1);
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break;
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case '.':
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case '!':
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r_core_cmd0 (core, str);
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break;
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case '{':
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(void)__core_patch_bracket (core, str, &noff);
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break;
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default:
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r_core_patch_line (core, str);
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break;
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}
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if (!*p) break;
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str = p;
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}
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// eprintf ("%d\n", *p);
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// eprintf ("Missing newline\n");
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free (p0);
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return 0;
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}
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