[英]How to Send Email with Gmail using cURL in C++
希望你們一切都好。
我正在嘗試制作一個程序,該程序將使用 Gmail 發送 email。
我有這個命令可以從 CMD 完美運行,但我不知道如何讓它在應用程序中運行。
這是命令: curl smtps://smtp.gmail.com:465 -v --mail-from "<sir@gmail.com>" --mail-rcpt "<mister@gmail.com>" --ssl -u sir@gmail.com:password -T "mail.txt" -k --anyauth
這些是 mail.txt 的內容:
From: "Sir" <sir@gmail.com>
To: "Mister" <mister@gmail.com>
Subject: This is a test
Hi,
I’m sending this mail with curl thru my gmail account.
Bye!
我在cURL 網站上遵循了這個例子
這就是我得到的:
static const char* payload_text[] = {
"From:<sir@gmail.com>\n"
"To:<mister@gmail.com>\n"
"Subject : This is a test\n\r"
"Hi,\n"
"I’m sending this mail with curl thru my gmail account.\n"
"Bye!\n"
};
struct upload_status {
int lines_read;
};
static size_t payload_source(void* ptr, size_t size, size_t nmemb, void* userp)
{
struct upload_status* upload_ctx = (struct upload_status*)userp;
const char* data;
if ((size == 0) || (nmemb == 0) || ((size * nmemb) < 1)) {
return 0;
}
data = payload_text[upload_ctx->lines_read];
if (data) {
size_t len = strlen(data);
memcpy(ptr, data, len);
upload_ctx->lines_read++;
return len;
}
return 0;
}
int curl_send_email()
{
CURL* curl;
CURLcode res = CURLE_OK;
struct curl_slist* recipients = NULL;
struct upload_status upload_ctx = { 0 };
curl = curl_easy_init();
if (curl)
{
curl_easy_setopt(curl, CURLOPT_URL, "smtps://smtp.gmail.com:465");
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
curl_easy_setopt(curl, CURLOPT_MAIL_FROM, "<sir@gmail.com>");
recipients = curl_slist_append(recipients, "<mister@gmail.com>");
curl_easy_setopt(curl, CURLOPT_MAIL_RCPT, recipients);
curl_easy_setopt(curl, CURLOPT_USE_SSL, 1L);
curl_easy_setopt(curl, CURLOPT_USERNAME, "<sir@gmail.com>");
curl_easy_setopt(curl, CURLOPT_PASSWORD, "password");
curl_easy_setopt(curl, CURLOPT_READFUNCTION, payload_source);
curl_easy_setopt(curl, CURLOPT_READDATA, &upload_ctx);
curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
curl_easy_setopt(curl, CURLOPT_HTTPAUTH, (long)CURLAUTH_ANY);
/* Send the message */
res = curl_easy_perform(curl);
/* Check for errors */
if (res != CURLE_OK)
fprintf(stderr, "curl_easy_perform() failed: %s\n",
curl_easy_strerror(res));
/* Free the list of recipients */
curl_slist_free_all(recipients);
curl_easy_cleanup(curl);
}
return (int)res;
}
int main()
{
int message = curl_send_email();
std::cout << message << std::endl;
return 0;
}
但它不起作用,它返回一條消息說“登錄失敗”,即使用戶名和密碼是正確的。
有人可以告訴我我做錯了什么嗎?
提前致謝。
這一直有效到 2022 年 5 月 30 日:
curl
--url "smtp://smtp.gmail.com:587"
--mail-from "user@gmail.com"
--mail-rcpt "recipient@provider.com"
--upload-file mailContents.txt
--user "user@gmail.com:password"
--ssl-reqd --insecure --show-error --silent
但從那時起,谷歌刪除了不安全的登錄選項,我正在尋找一個解決方案,因為你......
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