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Diffstat (limited to 'locale/pt')
| -rw-r--r-- | locale/pt/LC_MESSAGES/_tils/2021-01-12-awk-snippet-send-email-to-multiple-recipients-with-curl.po | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/locale/pt/LC_MESSAGES/_tils/2021-01-12-awk-snippet-send-email-to-multiple-recipients-with-curl.po b/locale/pt/LC_MESSAGES/_tils/2021-01-12-awk-snippet-send-email-to-multiple-recipients-with-curl.po new file mode 100644 index 0000000..7561292 --- /dev/null +++ b/locale/pt/LC_MESSAGES/_tils/2021-01-12-awk-snippet-send-email-to-multiple-recipients-with-curl.po @@ -0,0 +1,243 @@ +# +msgid "" +msgstr "" + +msgid "title: 'Awk snippet: send email to multiple recipients with cURL'" +msgstr "" + +msgid "date: 2021-01-12" +msgstr "" + +msgid "layout: post" +msgstr "" + +msgid "lang: en" +msgstr "" + +msgid "ref: awk-snippet-send-email-to-multiple-recipients-with-curl" +msgstr "" + +msgid "My requirements for the `sendmail` command were:" +msgstr "" + +msgid "store the email in a file, and send it later." +msgstr "" + +msgid "send from different addresses, using different SMTP servers;" +msgstr "" + +msgid "" +"I couldn't find an MTA that could accomplish that, but I was able to quickly" +" write a solution." +msgstr "" + +msgid "The first part was the easiest: store the email in a file:" +msgstr "" + +msgid "" +"# ~/.config/mutt/muttrc:\n" +"set sendmail=~/bin/enqueue-email.sh\n" +"\n" +"# ~/bin/enqueue-email.sh:\n" +"#!/bin/sh -eu\n" +"\n" +"cat - > \"$HOME/mbsync/my-queued-emails/$(date -Is)\"\n" +msgstr "" + +msgid "" +"Now that I had the email file store locally, I needed a program to send the " +"email from the file, so that I could create a cronjob like:" +msgstr "" + +msgid "" +"for f in ~/mbsync/my-queued-emails/*; do\n" +" ~/bin/dispatch-email.sh \"$f\" && rm \"$f\"\n" +"done\n" +msgstr "" + +msgid "" +"The `dispatch-email.sh` would have to look at the `From: ` header and decide" +" which SMTP server to use. As I [found " +"out](https://blog.edmdesigner.com/send-email-from-linux-command-line/) that " +"[curl](https://curl.se/) supports SMTP and is able to send emails, this is " +"what I ended up with:" +msgstr "" + +msgid "Most of curl flags used are self-explanatory, except for `$rcpt`." +msgstr "" + +msgid "" +"curl connects to the SMTP server, but doesn't set the recipient address by " +"looking at the message. My solution was to generate the curl flags, store " +"them in `$rcpt` and use it unquoted to leverage shell word splitting." +msgstr "" + +msgid "" +"To me, the most interesting part was building the `$rcpt` flags. My first " +"instinct was to try grep, but it couldn't print only matches in a regex. As " +"I started to turn towards sed, I envisioned needing something else to loop " +"over the sed output, and I then moved to Awk." +msgstr "" + +msgid "" +"$ H='To: to@example.com, to2@example.com\\nCc: cc@example.com, cc2@example.com\\nBcc: bcc@example.com,bcc2@example.com\\n'\n" +"$ printf \"$H\" | awk '/^To: .*$/ { print $0 }'\n" +"To: to@example.com, to2@example.com\n" +"$ printf \"$H\" | awk 'match($0, /^To: (.*)$/, m) { print m }'\n" +"awk: ligne de commande:1: (FILENAME=- FNR=1) fatal : tentative d'utilisation du tableau « m » dans un contexte scalaire\n" +"$ printf \"$H\" | awk 'match($0, /^To: (.*)$/, m) { print m[0] }'\n" +"To: to@example.com, to2@example.com\n" +"$ printf \"$H\" | awk 'match($0, /^To: (.*)$/, m) { print m[1] }'\n" +"to@example.com, to2@example.com\n" +"$ printf \"$H\" | awk 'match($0, /^To: (.*)$/, m) { split(m[1], tos, \" \"); print tos }'\n" +"awk: ligne de commande:1: (FILENAME=- FNR=1) fatal : tentative d'utilisation du tableau « tos » dans un contexte scalaire\n" +"$ printf \"$H\" | awk 'match($0, /^To: (.*)$/, m) { split(m[1], tos, \" \"); print tos[0] }'\n" +"\n" +"$ printf \"$H\" | awk 'match($0, /^To: (.*)$/, m) { split(m[1], tos, \" \"); print tos[1] }'\n" +"to@example.com,\n" +"$ printf \"$H\" | awk 'match($0, /^To: (.*)$/, m) { split(m[1], tos, \" \"); print tos[2] }'\n" +"to2@example.com\n" +"$ printf \"$H\" | awk 'match($0, /^To: (.*)$/, m) { split(m[1], tos, \" \"); print tos[3] }'\n" +"\n" +msgstr "" + +msgid "" +"(This isn't the verbatim interactive session, but a cleaned version to make " +"it more readable.)" +msgstr "" + +msgid "" +"At this point, I realized I needed a for loop over the `tos` array, and I " +"moved the Awk snippet into the `~/bin/dispatch-email.sh`. I liked the final " +"thing:" +msgstr "" + +msgid "" +"match($0, /^(To|Cc|Bcc): (.*)$/, m) {\n" +" split(m[2], tos, \",\")\n" +" for (i in tos) {\n" +" print \"--mail-rcpt \" tos[i]\n" +" }\n" +"}\n" +msgstr "" + +msgid "" +"As I learn more about Awk, I feel that it is too undervalued, as many people" +" turn to Perl or other programming languages when Awk suffices. The " +"advantage is pretty clear: writing programs that run on any POSIX system, " +"without extra dependencies required." +msgstr "" + +msgid "Coding to the standards is underrated." +msgstr "" + +msgid "" +"#!/bin/sh -eu\n" +"\n" +"F=\"$1\"\n" +"\n" +"rcpt=\"$(awk '\n" +" match($0, /^(To|Cc|Bcc): (.*)$/, m) {\n" +" split(m[2], tos, \",\")\n" +" for (i in tos) {\n" +" print \"--mail-rcpt \" tos[i]\n" +" }\n" +" }\n" +"' \"$F\")\"\n" +"\n" +"if grep -qE '^From: .*<addr@server1\\.org>$' \"$F\"; then\n" +" curl \\\n" +" -s \\\n" +" --url smtp://smtp.server1.org:587 \\\n" +" --ssl-reqd \\\n" +" --mail-from addr@server1.org \\\n" +" $rcpt \\\n" +" --user 'addr@server1.org:my-long-and-secure-passphrase' \\\n" +" --upload-file \"$F\"\n" +"elif grep -qE '^From: .*<addr@server2\\.org>$' \"$F\"; then\n" +" curl \\\n" +" -s \\\n" +" --url smtp://smtp.server2.org:587 \\\n" +" --ssl-reqd \\\n" +" --mail-from addr@server2.org \\\n" +" $rcpt \\\n" +" --user 'addr@server2.org:my-long-and-secure-passphrase' \\\n" +" --upload-file \"$F\"\n" +"else\n" +" echo 'Bad \"From: \" address'\n" +" exit 1\n" +"fi\n" +msgstr "" + +msgid "" +"As I experimented with [Neomutt](https://neomutt.org/), I wanted to keep " +"being able to enqueue emails for sending later like my previous setup, so " +"that I didn't rely on having an internet connection." +msgstr "" + +msgid "" +"In the short Awk snippet, 3 things were new to me: the `match(...)`, " +"`split(...)` and `for () {}`. The only other function I have ever used was " +"`gsub(...)`, but these new ones felt similar enough that I could almost " +"guess their behaviour and arguments. `match(...)` stores the matches of a " +"regex on the given array positionally, and `split(...)` stores the chunks in" +" the given array." +msgstr "" + +msgid "I even did it incrementally:" +msgstr "" + +#~ msgid "I even did this incrementally:" +#~ msgstr "" + +#~ msgid "" +#~ "In the short Awk snippet, 3 things were new to me: the `match(...)`, " +#~ "`split(...)` and `for () {}`. The only other function I have ever used was " +#~ "`gsub(...)`, but these new felt similar enough that I could almost guess " +#~ "their behaviour. `match(...)` stores the matches of a regex on the given " +#~ "array positionally, and `split(...)` stores the chunks in the given array." +#~ msgstr "" + +#~ msgid "" +#~ "As I experimented with [Neomutt](https://neomutt.org/), I wanted to keep " +#~ "being able to enqueue emails for sending later, so that I didn't rely on " +#~ "having an internet connection." +#~ msgstr "" + +#~ msgid "" +#~ "#!/bin/sh -eu\n" +#~ "\n" +#~ "F=\"$1\"\n" +#~ "\n" +#~ "rcpt=\"$(awk '\n" +#~ " match($0, /^(To|Cc|Bcc): (.*)$/, m) {\n" +#~ " split(m[2], tos, \",\")\n" +#~ " for (i in tos) {\n" +#~ " print \"--mail-rcpt \" tos[i]\n" +#~ " }\n" +#~ " }\n" +#~ "' \"$F\")\"\n" +#~ "\n" +#~ "if grep -qE '^From: .*<addr@server1\\.org>$' \"$F\"; then\n" +#~ " curl \\\n" +#~ " -s \\\n" +#~ " --url smtp://smtp.server1.org:587 \\\n" +#~ " --ssl-reqd \\\n" +#~ " --mail-from addr@server1.org \\\n" +#~ " $rcpt \\\n" +#~ " --user 'addr@server1.org:my-long-and-secure-passphrase' \\\n" +#~ " --upload-file \"$F\"\n" +#~ "eliif grep -qE '^From: .*<addr@server2\\.org>$' \"$F\"; then\n" +#~ " curl \\\n" +#~ " -s \\\n" +#~ " --url smtp://smtp.server2.org:587 \\\n" +#~ " --ssl-reqd \\\n" +#~ " --mail-from addr@server2.org \\\n" +#~ " $rcpt \\\n" +#~ " --user 'addr@server2.org:my-long-and-secure-passphrase' \\\n" +#~ " --upload-file \"$F\"\n" +#~ "else\n" +#~ " echo 'Bad \"From: \" address'\n" +#~ " exit 1\n" +#~ "fi\n" +#~ msgstr "" |