mirror of
https://github.com/radareorg/radare2.git
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409 lines
9.0 KiB
C
409 lines
9.0 KiB
C
/* radare - LGPL - Copyright 2008-2011 pancake<nopcode.org> */
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#include <stdio.h>
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#include "r_cmd.h"
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#include "r_util.h"
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#if 0
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static ut64 _macro_break_value = 0;
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ut64 *macro_break_value = NULL;
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static int macro_break;
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int macro_counter = 0;
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static struct list_head macros;
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#endif
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R_API void r_cmd_macro_init(RCmdMacro *mac) {
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mac->counter = 0;
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mac->_brk_value = 0;
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mac->brk_value = &mac->_brk_value;
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mac->printf = (void*)printf;
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mac->num = NULL;
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mac->user = NULL;
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mac->cmd = NULL;
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INIT_LIST_HEAD (&mac->macros);
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}
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// XXX add support single line function definitions
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// XXX add support for single name multiple nargs macros
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R_API int r_cmd_macro_add(RCmdMacro *mac, const char *oname) {
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struct list_head *pos;
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struct r_cmd_macro_item_t *macro;
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char buf[R_CMD_MAXLEN];
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char *bufp;
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char *pbody;
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char *ptr;
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int lidx;
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int macro_update;
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char *name, *args = NULL;
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if (!*oname) {
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r_cmd_macro_list (mac);
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return 0;
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}
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name = strdup (oname);
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if (name == NULL) {
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perror ("strdup");
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return 0;
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}
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pbody = strchr (name, ',');
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if (pbody) {
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*pbody = '\0';
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pbody++;
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}
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if (name[strlen (name)-1]==')') {
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eprintf ("r_cmd_macro_add: missing macro body?\n");
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free (name);
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return -1;
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}
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macro = NULL;
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macro_update = 0;
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ptr = strchr (name, ' ');
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if (ptr) {
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*ptr='\0';
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args = ptr +1;
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}
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list_for_each_prev (pos, &mac->macros) {
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RCmdMacroItem *m = list_entry (pos, struct r_cmd_macro_item_t, list);
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if (!strcmp (name, m->name)) {
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macro = m;
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// free (macro->name);
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free (macro->code);
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free (macro->args);
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macro_update = 1;
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break;
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}
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}
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if (ptr)
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*ptr = ' ';
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if (macro == NULL) {
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macro = (struct r_cmd_macro_item_t *)malloc (sizeof (struct r_cmd_macro_item_t));
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macro->name = strdup (name);
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}
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macro->codelen = (pbody)? strlen (pbody)+2 : 4096;
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macro->code = (char *)malloc (macro->codelen);
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*macro->code = '\0';
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macro->nargs = 0;
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if (args == NULL)
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args = "";
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macro->args = strdup (args);
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ptr = strchr (macro->name, ' ');
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if (ptr != NULL) {
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*ptr='\0';
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macro->nargs = r_str_word_set0 (ptr+1);
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}
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if (pbody) {
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for (lidx=0; pbody[lidx]; lidx++) {
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if (pbody[lidx]==',')
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pbody[lidx]='\n';
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else
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if (pbody[lidx]==')' && pbody[lidx-1]=='\n')
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pbody[lidx]='\0';
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}
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strncpy (macro->code, pbody, macro->codelen);
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//strcat (macro->code, ",");
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} else {
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int lbufp, codelen = 0;
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for (;codelen<R_CMD_MAXLEN;) { // XXX input from mac->fd
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#if 0
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if (stdin == r_cons_stdin_fd) {
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mac->printf(".. ");
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fflush(stdout);
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}
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fgets(buf, 1023, r_cons_stdin_fd);
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#endif
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fgets (buf, sizeof (buf)-1, stdin);
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if (*buf==')')
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break;
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for (bufp=buf;*bufp==' '||*bufp=='\t';bufp++);
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lidx = strlen (buf)-2;
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lbufp = strlen (bufp);
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if (buf[lidx]==')' && buf[lidx-1]!='(') {
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buf[lidx]='\0';
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memcpy (macro->code+codelen, bufp, lbufp+1);
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break;
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}
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if (*buf != '\n') {
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memcpy (macro->code+codelen, bufp, lbufp+1);
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codelen += lbufp;
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}
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}
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}
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if (macro_update == 0)
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list_add_tail (&(macro->list), &(mac->macros));
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free (name);
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return 0;
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}
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R_API int r_cmd_macro_rm(struct r_cmd_macro_t *mac, const char *_name) {
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char *name = alloca (strlen(_name));
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struct list_head *pos;
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char *ptr = strchr (name, ')');
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if (ptr) *ptr='\0';
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list_for_each_prev(pos, &mac->macros) {
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RCmdMacroItem *mac = list_entry(pos, RCmdMacroItem, list);
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if (!strcmp (mac->name, name)) {
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free (mac->name);
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free (mac->code);
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list_del (&(mac->list));
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free (mac);
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eprintf ("Macro '%s' removed.\n", name);
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return R_TRUE;
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}
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}
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return R_FALSE;
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}
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// TODO: use mac->printf which is r_cons_printf at the end
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R_API void r_cmd_macro_list(RCmdMacro *mac) {
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int j, idx = 0;
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struct list_head *pos;
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list_for_each_prev (pos, &mac->macros) {
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RCmdMacroItem *m = list_entry (pos, RCmdMacroItem, list);
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/* mac-> */ printf ("%d (%s %s, ", idx, m->name, m->args);
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for (j=0; m->code[j]; j++) {
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if (m->code[j]=='\n')
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/* mac-> */ printf (", ");
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else /* mac->*/ printf ("%c", m->code[j]);
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}
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/* mac->*/ printf (")\n");
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idx++;
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}
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}
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#if 0
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(define name value
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f $0 @ $1)
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(define loop cmd
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loop:
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? $0 == 0
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?? .loop:
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)
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.(define patata 3)
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#endif
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R_API int r_cmd_macro_cmd_args(RCmdMacro *mac, const char *ptr, const char *args, int nargs) {
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int i, j;
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char *pcmd, cmd[R_CMD_MAXLEN];
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char *arg = args? strdup (args): strdup ("");
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*cmd = '\0';
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for (i=j=0; ptr[j] && j<R_CMD_MAXLEN; i++,j++) {
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if (ptr[j]=='$') {
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if (ptr[j+1]>='0' && ptr[j+1]<='9') {
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int wordlen;
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char *word = r_str_word_get0 (arg, ptr[j+1]-'0');
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if (word) {
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wordlen = strlen (word);
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if ((i+wordlen+1) >= sizeof (cmd)) {
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free (arg);
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return -1;
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}
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memcpy (cmd+i, word, wordlen+1);
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i += wordlen-1;
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j++;
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}
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} else
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if (ptr[j+1]=='@') {
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char off[32];
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int offlen;
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offlen = snprintf (off, sizeof (off), "%d", mac->counter);
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if ((i+offlen+1) >= sizeof (cmd)) {
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free (arg);
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return -1;
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}
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memcpy (cmd+i, off, offlen+1);
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i += offlen-1;
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j++;
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} else {
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cmd[i]=ptr[j];
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cmd[i+1]='\0';
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}
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} else {
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cmd[i] = ptr[j];
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cmd[i+1] = '\0';
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}
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}
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pcmd = cmd;
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while (*pcmd==' '||*cmd=='\t')
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pcmd++;
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free (arg);
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return (*pcmd==')')? 0: mac->cmd (mac->user, pcmd);
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}
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R_API char *r_cmd_macro_label_process(RCmdMacro *mac, RCmdMacroLabel *labels, int *labels_n, char *ptr) {
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int i;
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for (; *ptr==' '; ptr++);
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if (ptr[strlen (ptr)-1]==':') {
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/* label detected */
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if (ptr[0]=='.') {
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// eprintf("---> GOTO '%s'\n", ptr+1);
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/* goto */
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for (i=0;i<*labels_n;i++) {
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// eprintf("---| chk '%s'\n", labels[i].name);
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if (!strcmp (ptr+1, labels[i].name))
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return labels[i].ptr;
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}
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return NULL;
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} else
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/* conditional goto */
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if (ptr[0]=='?' && ptr[1]=='!' && ptr[2] != '?') {
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if (mac->num && mac->num->value != 0) {
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char *label = ptr + 3;
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for(; *label==' '||*label=='.'; label++);
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// eprintf("===> GOTO %s\n", label);
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/* goto label ptr+3 */
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for (i=0;i<*labels_n;i++) {
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if (!strcmp (label, labels[i].name))
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return labels[i].ptr;
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}
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return NULL;
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}
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} else
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/* conditional goto */
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if (ptr[0]=='?' && ptr[1]=='?' && ptr[2] != '?') {
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if (mac->num->value == 0) {
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char *label = ptr + 3;
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for (;label[0]==' '||label[0]=='.'; label++);
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// eprintf("===> GOTO %s\n", label);
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/* goto label ptr+3 */
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for (i=0;i<*labels_n;i++) {
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if (!strcmp (label, labels[i].name))
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return labels[i].ptr;
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}
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return NULL;
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}
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} else {
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for (i=0; i<*labels_n; i++) {
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// eprintf("---| chk '%s'\n", labels[i].name);
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if (!strcmp (ptr+1, labels[i].name)) {
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i = 0;
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break;
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}
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}
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/* Add label */
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// eprintf("===> ADD LABEL(%s)\n", ptr);
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if (i == 0) {
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strncpy (labels[*labels_n].name, ptr, 64);
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labels[*labels_n].ptr = ptr+strlen (ptr)+1;
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*labels_n = *labels_n + 1;
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}
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}
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return ptr + strlen (ptr)+1;
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}
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return ptr;
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}
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/* TODO: add support for spaced arguments */
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R_API int r_cmd_macro_call(RCmdMacro *mac, const char *name) {
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char *args;
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int nargs = 0;
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char *str, *ptr, *ptr2;
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struct list_head *pos;
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static int macro_level = 0;
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/* labels */
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int labels_n = 0;
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struct r_cmd_macro_label_t labels[MACRO_LABELS];
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str = strdup (name);
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if (str == NULL) {
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perror ("strdup");
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return R_FALSE;
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}
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ptr = strchr (str, ')');
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if (ptr == NULL) {
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eprintf ("Missing end ')' parenthesis.\n");
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free (str);
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return R_FALSE;
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} else *ptr='\0';
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args = strchr (str, ' ');
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if (args) {
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*args = '\0';
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args++;
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nargs = r_str_word_set0 (args);
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}
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macro_level++;
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if (macro_level > MACRO_LIMIT) {
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eprintf ("Maximum macro recursivity reached.\n");
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macro_level--;
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free (str);
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return 0;
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}
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list_for_each_prev (pos, &mac->macros) {
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RCmdMacroItem *m = list_entry (pos, RCmdMacroItem, list);
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if (!strcmp (str, m->name)) {
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char *ptr = m->code;
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char *end = strchr (ptr, '\n');
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if (m->nargs != 0 && nargs != m->nargs) {
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eprintf ("Macro '%s' expects %d args, not %d\n", m->name, m->nargs, nargs);
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macro_level --;
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free (str);
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return R_FALSE;
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}
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mac->brk = 0;
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do {
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if (end) *end='\0';
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/* Label handling */
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ptr2 = r_cmd_macro_label_process (mac, &(labels[0]), &labels_n, ptr);
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if (ptr2 == NULL) {
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eprintf ("Oops. invalid label name\n");
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break;
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} else
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if (ptr != ptr2 && end) {
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*end='\n';
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ptr = ptr2;
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end = strchr(ptr, '\n');
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continue;
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}
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/* Command execution */
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if (*ptr)
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r_cmd_macro_cmd_args (mac, ptr, args, nargs);
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if (end) {
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*end = '\n';
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ptr = end + 1;
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} else {
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macro_level --;
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free (str);
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return R_TRUE;
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}
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/* Fetch next command */
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end = strchr (ptr, '\n');
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} while (!mac->brk);
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if (mac->brk) {
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macro_level--;
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free (str);
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return R_TRUE;
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}
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}
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}
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eprintf ("No macro named '%s'\n", str);
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macro_level--;
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free (str);
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return R_TRUE;
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}
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R_API int r_cmd_macro_break(RCmdMacro *mac, const char *value) {
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mac->brk = 1;
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mac->brk_value = NULL;
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mac->_brk_value = (ut64)r_num_math (mac->num, value);
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if (value && *value)
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mac->brk_value = &mac->_brk_value;
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return 0;
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}
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