parsing.h File Reference

#include <stdbool.h>
#include <stdlib.h>

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Macros
#define	READ_STR_PROMPT_BASE   "Enter %s: "
#define	YH_INTERNAL   __attribute__((visibility("hidden")))

Functions
bool YH_INTERNAL	parse_pw (const char *prompt, char *pw, char *parsed, size_t *parsed_len)
bool YH_INTERNAL	read_string (const char *name, char *str_buf, size_t str_buf_len, bool hidden)

Macro Definition Documentation

READ_STR_PROMPT_BASE

#define READ_STR_PROMPT_BASE   "Enter %s: "

Definition at line 25 of file parsing.h.

YH_INTERNAL

#define YH_INTERNAL   __attribute__((visibility("hidden")))

Definition at line 27 of file parsing.h.

Function Documentation

parse_pw()

bool YH_INTERNAL parse_pw	(	const char *	prompt,
		char *	pw,
		char *	parsed,
		size_t *	parsed_len )

Definition at line 61 of file parsing.c.

                                                                              {
  if (strlen(pw) > *parsed_len) {
    fprintf(stderr, "Unable to read name, buffer too small\n");
    return false;
  }
 
  if (strlen(pw) == 0) {
    if (read_string(prompt, parsed, *parsed_len, true) == false) {
      return false;
    }
  } else {
    strncpy(parsed, pw, *parsed_len);
  }
 
  *parsed_len = strlen(parsed);
 
  return true;
}

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read_string()

bool YH_INTERNAL read_string	(	const char *	name,
		char *	str_buf,
		size_t	str_buf_len,
		bool	hidden )

Definition at line 26 of file parsing.c.

                              {
 
  char prompt[sizeof(READ_STR_PROMPT_BASE) + 32] = {0};
  int ret;
 
  if (str_buf_len < 1) {
    fprintf(stderr, "Unable to read %s: buffer too small\n", name);
    return false;
  }
 
  ret = snprintf(prompt, sizeof(prompt), READ_STR_PROMPT_BASE, name);
  if (ret < 0 || ((unsigned int) ret) > (sizeof(prompt) - 1)) {
    fprintf(stderr, "Unable to read %s: snprintf failed\n", name);
    return false;
  }
 
  if (hidden == true) {
    ret = EVP_read_pw_string(str_buf, str_buf_len, prompt, true);
    if (ret != 0) {
      fprintf(stderr, "Retrieving %s failed (%d)\n", name, ret);
      return false;
    }
  } else {
    fprintf(stdout, "%s", prompt);
    str_buf = fgets(str_buf, str_buf_len, stdin);
    if (str_buf == NULL) {
      return false;
    }
    str_buf[strlen(str_buf) - 1] = '\0';
  }
 
  return true;
}

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